Loosing connection to DNS over WiFi with Centrino Wireless-N 2200 (Ubuntu 18, KDE Neon) [on hold]












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My WiFi constantly loses the ability to talk to the DNS (is this understandable?) and it looks like it has lost connection at all. I did a journalctl --follow, but I don't fully understand the messages. There are plenty of them, so I'm trying to filter them.



By the way nm --version:



GNU nm (GNU Binutils for Ubuntu) 2.30


To me it seems like there happens an error for getting addresses from DNS, then I don't get any response anymore, disconnect it manually and try to reconnect (two manual steps), but this fails. Is anyone more familiar with the network manager, DNS and DHCP stuff and does see an identifiable error or misconiguration?



D HH:33:19 name_device: dhclient[2811]: DHCPREQUEST of 192.168.2.100 on wlp3s0 to 255.255.255.255 port 67 (xid=0x36d6a67e)
D HH:33:19 name_device: avahi-daemon[1134]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::dc0b:8e7a:5f65:1656.
D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv6 with address 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9.
D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9 on wlp3s0.*.
D HH:33:19 name_device: avahi-daemon[1134]: Withdrawing address record for fe80::dc0b:8e7a:5f65:1656 on wlp3s0.
D HH:33:19 name_device: dhclient[2811]: DHCPACK of 192.168.2.100 from 192.168.2.1
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9717] dhcp4 (wlp3s0): address 192.168.2.100
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): plen 24 (255.255.255.0)
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): gateway 192.168.2.1
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): lease time 1814400
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): nameserver '192.168.2.1'
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): domain name 'speedport.ip'
D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): state changed unknown -> bound
D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.2.100.
D HH:33:19 name_device: avahi-daemon[1134]: New relevant interface wlp3s0.IPv4 for mDNS.
D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 192.168.2.100 on wlp3s0.IPv4.
D HH:33:19 name_device: dhclient[2811]: bound to 192.168.2.100 -- renewal in 761842 seconds.
D HH:33:20 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:f0b4:3182:31ac:d923 on wlp3s0.*.
D HH:33:20 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 2040ms.
D HH:33:22 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 4270ms.
D HH:33:26 name_device: systemd[1]: Starting Stop ureadahead data collection...
D HH:33:26 name_device: systemd[1]: Started Stop ureadahead data collection.
D HH:33:26 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 8270ms.
D HH:33:34 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 17160ms.
D HH:33:52 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 33780ms.
D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5206] settings-connection[0x55b1ebb4d360,027032e5-54ba-4b7e-ae11-26100c4dddcf]: write: successfully updated (keyfile: update /etc/NetworkManager/system-connections/WLAN-235212 (027032e5-54ba-4b7e-ae11-26100c4dddcf,"WLAN-235212"))
D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5215] audit: op="connection-update" uuid="027032e5-54ba-4b7e-ae11-26100c4dddcf" name="WLAN-235212" args="ipv6.may-fail" pid=2859 uid=1000 result="success"
D HH:34:03 name_device: NetworkManager[1201]: <warn> [1545896043.4648] dhcp6 (wlp3s0): request timed out
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4649] dhcp6 (wlp3s0): state changed unknown -> timeout
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): canceled DHCP transaction, DHCP client pid 2825
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): state changed timeout -> done
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4686] device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4708] device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4714] device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4718] manager: NetworkManager state is now CONNECTED_LOCAL
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4836] manager: NetworkManager state is now CONNECTED_SITE
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv4 routing and DNS
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv6 routing and DNS
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4843] device (wlp3s0): Activation: successful, device activated.
D HH:34:03 name_device: dbus-daemon[1141]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.17' (uid=0 pid=1201 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4859] manager: NetworkManager state is now CONNECTED_GLOBAL
D HH:34:03 name_device: systemd[1]: Starting Network Manager Script Dispatcher Service...
D HH:34:03 name_device: systemd[1]: Starting resolvconf-pull-resolved.service...
D HH:34:03 name_device: org.kde.kdeconnect[2250]: kdeconnect.core: Broadcasting identity packet
D HH:34:03 name_device: dbus-daemon[1141]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
D HH:34:03 name_device: systemd[1]: Started Network Manager Script Dispatcher Service.
D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: new request (1 scripts)
D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: start running ordered scripts...
D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': new request (1 scripts)
D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent (instance -).
D HH:34:03 name_device: postfix/postfix-script[3077]: refreshing the Postfix mail system
D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': start running ordered scripts...
D HH:34:03 name_device: postfix/master[1950]: reload -- version 3.3.0, configuration /etc/postfix
D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent (instance -).
D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent.
D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent.
D HH:34:03 name_device: systemd[1]: Started resolvconf-pull-resolved.service.
D HH:34:27 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=9999 txrate=121500
D HH:34:32 name_device: systemd-timesyncd[905]: Synchronized to time server [2001:67c:1560:8003::c7]:123 (ntp.ubuntu.com).
D HH:35:29 name_device: dbus-daemon[2250]: [session uid=1000 pid=2250] Activated service 'org.kde.runners.baloo' failed: Process org.kde.runners.baloo exited with status 255
D HH:37:31 name_device: anacron[1123]: Job `cron.daily' started
D HH:37:31 name_device: anacron[3659]: Updated timestamp for job `cron.daily' to 2018-12-27
D HH:37:31 name_device: cracklib[3682]: no dictionary update necessary.
D HH:37:31 name_device: systemd[1]: Stopping Make remote CUPS printers available locally...
D HH:37:31 name_device: systemd[1]: Stopped Make remote CUPS printers available locally.
D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler...
D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Closed CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.

# what?
D HH:37:31 name_device: systemd[1]: Listening on CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
D HH:37:31 name_device: systemd[1]: Started Make remote CUPS printers available locally.

# looks like a call stack?
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/proc_inode_cache/cgroup/proc_inode_cache(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0005824/cgroup/task_struct(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0002048/cgroup/kmalloc-2048(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(1101:cups-browsed.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000128/cgroup/eventpoll_epi(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000192/cgroup/kmalloc-192(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000072/cgroup/eventpoll_pwq(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(880:cups.service)"
D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(880:cups.service)"
D HH:37:32 name_device: rsyslogd[1215]: [origin software="rsyslogd" swVersion="8.32.0" x-pid="1215" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
D HH:37:37 name_device: anacron[1123]: Job `cron.daily' terminated
D HH:37:37 name_device: anacron[1123]: Normal exit (1 job run)

# looks like a call stack?
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(802:anacron.service)"
D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(802:anacron.service)"
D HH:37:57 name_device: PackageKit[2478]: uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
D HH:37:57 name_device: PackageKit[2478]: uid 1000 obtained auth for org.freedesktop.packagekit.system-sources-refresh
D HH:37:57 name_device: systemd-resolved[896]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

# 6 more of them
D HH:38:06 name_device: PackageKit[2478]: refresh-cache transaction /10658_bdadeccb from uid 1000 finished with success after 9012ms
D HH:38:08 name_device: packagekitd[2478]: Starting pkgProblemResolver with broken count: 0
D HH:38:08 name_device: packagekitd[2478]: Starting 2 pkgProblemResolver with broken count: 0
D HH:38:08 name_device: packagekitd[2478]: Done
D HH:38:08 name_device: PackageKit[2478]: get-updates transaction /10659_dabaeeee from uid 1000 finished with success after 1422ms
D HH:38:18 name_device: kernel: wlp3s0: AP bc:30:d9:8a:2e:8c changed bandwidth, new config is 2462 MHz, width 1 (2462/0 MHz)
D HH:38:46 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
D HH:38:56 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
D HH:39:14 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
D HH:39:23 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
D HH:39:35 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
# many more of them, usually every ~5 sec

D HH:41:30 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
D HH:41:31 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
D HH:41:31 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
D HH:41:32 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
D HH:41:33 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
D HH:41:34 name_device: kernel: wlp3s0: deauthenticated from bc:30:d9:8a:2e:8c (Reason: 2=PREV_AUTH_NOT_VALID)
D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=bc:30:d9:8a:2e:8c reason=2
D HH:41:34 name_device: NetworkManager[1201]: <warn> [1545896494.3523] sup-iface[0x55b1ebb55190,wlp3s0]: connection disconnected (reason 2)
D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.3723] device (wlp3s0): supplicant interface state: completed -> disconnected
D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.4575] device (wlp3s0): supplicant interface state: disconnected -> scanning
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: SME: Trying to authenticate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
D HH:41:35 name_device: kernel: wlp3s0: authenticate with bc:30:d9:8a:2e:8c
D HH:41:35 name_device: kernel: wlp3s0: send auth to bc:30:d9:8a:2e:8c (try 1/3)
D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0105] device (wlp3s0): supplicant interface state: scanning -> authenticating
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Trying to associate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
D HH:41:35 name_device: kernel: wlp3s0: authenticated
D HH:41:35 name_device: kernel: wlp3s0: associate with bc:30:d9:8a:2e:8c (try 1/3)
D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0173] device (wlp3s0): supplicant interface state: authenticating -> associating
D HH:41:35 name_device: kernel: wlp3s0: RX AssocResp from bc:30:d9:8a:2e:8c (capab=0x1431 status=0 aid=2)
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Associated with bc:30:d9:8a:2e:8c
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE type=COUNTRY alpha2=DE
D HH:41:35 name_device: kernel: wlp3s0: associated
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Key negotiation completed with bc:30:d9:8a:2e:8c [PTK=CCMP GTK=CCMP]
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to bc:30:d9:8a:2e:8c completed [id=0 id_str=]
D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0520] device (wlp3s0): supplicant interface state: associating -> completed
D HH:41:35 name_device: kernel: wlp3s0: Limiting TX power to 20 (20 - 0) dBm as advertised by bc:30:d9:8a:2e:8c
D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-50 noise=9999 txrate=1000
D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session opened for user root by (uid=0)
D HH:42:01 name_device: CRON[5108]: (root) CMD ( test -x /etc/cron.daily/popularity-contest && /etc/cron.daily/popularity-contest --crond)
D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session closed for user root
D HH:42:16 name_device: NetworkManager[1201]: <info> [1545896536.5760] audit: op="statistics" arg="refresh-rate-ms" pid=2363 uid=1000 result="success"
D HH:42:18 name_device: NetworkManager[1201]: <info> [1545896538.4280] device (wlp3s0): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed')









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put on hold as off-topic by karel, DK Bose, Kulfy, Eric Carvalho, Thomas Dec 28 '18 at 12:50


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    0














    My WiFi constantly loses the ability to talk to the DNS (is this understandable?) and it looks like it has lost connection at all. I did a journalctl --follow, but I don't fully understand the messages. There are plenty of them, so I'm trying to filter them.



    By the way nm --version:



    GNU nm (GNU Binutils for Ubuntu) 2.30


    To me it seems like there happens an error for getting addresses from DNS, then I don't get any response anymore, disconnect it manually and try to reconnect (two manual steps), but this fails. Is anyone more familiar with the network manager, DNS and DHCP stuff and does see an identifiable error or misconiguration?



    D HH:33:19 name_device: dhclient[2811]: DHCPREQUEST of 192.168.2.100 on wlp3s0 to 255.255.255.255 port 67 (xid=0x36d6a67e)
    D HH:33:19 name_device: avahi-daemon[1134]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::dc0b:8e7a:5f65:1656.
    D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv6 with address 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9.
    D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9 on wlp3s0.*.
    D HH:33:19 name_device: avahi-daemon[1134]: Withdrawing address record for fe80::dc0b:8e7a:5f65:1656 on wlp3s0.
    D HH:33:19 name_device: dhclient[2811]: DHCPACK of 192.168.2.100 from 192.168.2.1
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9717] dhcp4 (wlp3s0): address 192.168.2.100
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): plen 24 (255.255.255.0)
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): gateway 192.168.2.1
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): lease time 1814400
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): nameserver '192.168.2.1'
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): domain name 'speedport.ip'
    D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): state changed unknown -> bound
    D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.2.100.
    D HH:33:19 name_device: avahi-daemon[1134]: New relevant interface wlp3s0.IPv4 for mDNS.
    D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 192.168.2.100 on wlp3s0.IPv4.
    D HH:33:19 name_device: dhclient[2811]: bound to 192.168.2.100 -- renewal in 761842 seconds.
    D HH:33:20 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:f0b4:3182:31ac:d923 on wlp3s0.*.
    D HH:33:20 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 2040ms.
    D HH:33:22 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 4270ms.
    D HH:33:26 name_device: systemd[1]: Starting Stop ureadahead data collection...
    D HH:33:26 name_device: systemd[1]: Started Stop ureadahead data collection.
    D HH:33:26 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 8270ms.
    D HH:33:34 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 17160ms.
    D HH:33:52 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 33780ms.
    D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5206] settings-connection[0x55b1ebb4d360,027032e5-54ba-4b7e-ae11-26100c4dddcf]: write: successfully updated (keyfile: update /etc/NetworkManager/system-connections/WLAN-235212 (027032e5-54ba-4b7e-ae11-26100c4dddcf,"WLAN-235212"))
    D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5215] audit: op="connection-update" uuid="027032e5-54ba-4b7e-ae11-26100c4dddcf" name="WLAN-235212" args="ipv6.may-fail" pid=2859 uid=1000 result="success"
    D HH:34:03 name_device: NetworkManager[1201]: <warn> [1545896043.4648] dhcp6 (wlp3s0): request timed out
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4649] dhcp6 (wlp3s0): state changed unknown -> timeout
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): canceled DHCP transaction, DHCP client pid 2825
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): state changed timeout -> done
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4686] device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4708] device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4714] device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4718] manager: NetworkManager state is now CONNECTED_LOCAL
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4836] manager: NetworkManager state is now CONNECTED_SITE
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv4 routing and DNS
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv6 routing and DNS
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4843] device (wlp3s0): Activation: successful, device activated.
    D HH:34:03 name_device: dbus-daemon[1141]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.17' (uid=0 pid=1201 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
    D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4859] manager: NetworkManager state is now CONNECTED_GLOBAL
    D HH:34:03 name_device: systemd[1]: Starting Network Manager Script Dispatcher Service...
    D HH:34:03 name_device: systemd[1]: Starting resolvconf-pull-resolved.service...
    D HH:34:03 name_device: org.kde.kdeconnect[2250]: kdeconnect.core: Broadcasting identity packet
    D HH:34:03 name_device: dbus-daemon[1141]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
    D HH:34:03 name_device: systemd[1]: Started Network Manager Script Dispatcher Service.
    D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: new request (1 scripts)
    D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: start running ordered scripts...
    D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': new request (1 scripts)
    D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent (instance -).
    D HH:34:03 name_device: postfix/postfix-script[3077]: refreshing the Postfix mail system
    D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': start running ordered scripts...
    D HH:34:03 name_device: postfix/master[1950]: reload -- version 3.3.0, configuration /etc/postfix
    D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent (instance -).
    D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent.
    D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent.
    D HH:34:03 name_device: systemd[1]: Started resolvconf-pull-resolved.service.
    D HH:34:27 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=9999 txrate=121500
    D HH:34:32 name_device: systemd-timesyncd[905]: Synchronized to time server [2001:67c:1560:8003::c7]:123 (ntp.ubuntu.com).
    D HH:35:29 name_device: dbus-daemon[2250]: [session uid=1000 pid=2250] Activated service 'org.kde.runners.baloo' failed: Process org.kde.runners.baloo exited with status 255
    D HH:37:31 name_device: anacron[1123]: Job `cron.daily' started
    D HH:37:31 name_device: anacron[3659]: Updated timestamp for job `cron.daily' to 2018-12-27
    D HH:37:31 name_device: cracklib[3682]: no dictionary update necessary.
    D HH:37:31 name_device: systemd[1]: Stopping Make remote CUPS printers available locally...
    D HH:37:31 name_device: systemd[1]: Stopped Make remote CUPS printers available locally.
    D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler...
    D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Closed CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.

    # what?
    D HH:37:31 name_device: systemd[1]: Listening on CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
    D HH:37:31 name_device: systemd[1]: Started Make remote CUPS printers available locally.

    # looks like a call stack?
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/proc_inode_cache/cgroup/proc_inode_cache(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0005824/cgroup/task_struct(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0002048/cgroup/kmalloc-2048(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(1101:cups-browsed.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000128/cgroup/eventpoll_epi(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000192/cgroup/kmalloc-192(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000072/cgroup/eventpoll_pwq(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(880:cups.service)"
    D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(880:cups.service)"
    D HH:37:32 name_device: rsyslogd[1215]: [origin software="rsyslogd" swVersion="8.32.0" x-pid="1215" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
    D HH:37:37 name_device: anacron[1123]: Job `cron.daily' terminated
    D HH:37:37 name_device: anacron[1123]: Normal exit (1 job run)

    # looks like a call stack?
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(802:anacron.service)"
    D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(802:anacron.service)"
    D HH:37:57 name_device: PackageKit[2478]: uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
    D HH:37:57 name_device: PackageKit[2478]: uid 1000 obtained auth for org.freedesktop.packagekit.system-sources-refresh
    D HH:37:57 name_device: systemd-resolved[896]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

    # 6 more of them
    D HH:38:06 name_device: PackageKit[2478]: refresh-cache transaction /10658_bdadeccb from uid 1000 finished with success after 9012ms
    D HH:38:08 name_device: packagekitd[2478]: Starting pkgProblemResolver with broken count: 0
    D HH:38:08 name_device: packagekitd[2478]: Starting 2 pkgProblemResolver with broken count: 0
    D HH:38:08 name_device: packagekitd[2478]: Done
    D HH:38:08 name_device: PackageKit[2478]: get-updates transaction /10659_dabaeeee from uid 1000 finished with success after 1422ms
    D HH:38:18 name_device: kernel: wlp3s0: AP bc:30:d9:8a:2e:8c changed bandwidth, new config is 2462 MHz, width 1 (2462/0 MHz)
    D HH:38:46 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
    D HH:38:56 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
    D HH:39:14 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
    D HH:39:23 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
    D HH:39:35 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
    # many more of them, usually every ~5 sec

    D HH:41:30 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
    D HH:41:31 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
    D HH:41:31 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
    D HH:41:32 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
    D HH:41:33 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
    D HH:41:34 name_device: kernel: wlp3s0: deauthenticated from bc:30:d9:8a:2e:8c (Reason: 2=PREV_AUTH_NOT_VALID)
    D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=bc:30:d9:8a:2e:8c reason=2
    D HH:41:34 name_device: NetworkManager[1201]: <warn> [1545896494.3523] sup-iface[0x55b1ebb55190,wlp3s0]: connection disconnected (reason 2)
    D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
    D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.3723] device (wlp3s0): supplicant interface state: completed -> disconnected
    D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.4575] device (wlp3s0): supplicant interface state: disconnected -> scanning
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: SME: Trying to authenticate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
    D HH:41:35 name_device: kernel: wlp3s0: authenticate with bc:30:d9:8a:2e:8c
    D HH:41:35 name_device: kernel: wlp3s0: send auth to bc:30:d9:8a:2e:8c (try 1/3)
    D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0105] device (wlp3s0): supplicant interface state: scanning -> authenticating
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Trying to associate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
    D HH:41:35 name_device: kernel: wlp3s0: authenticated
    D HH:41:35 name_device: kernel: wlp3s0: associate with bc:30:d9:8a:2e:8c (try 1/3)
    D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0173] device (wlp3s0): supplicant interface state: authenticating -> associating
    D HH:41:35 name_device: kernel: wlp3s0: RX AssocResp from bc:30:d9:8a:2e:8c (capab=0x1431 status=0 aid=2)
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Associated with bc:30:d9:8a:2e:8c
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE type=COUNTRY alpha2=DE
    D HH:41:35 name_device: kernel: wlp3s0: associated
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Key negotiation completed with bc:30:d9:8a:2e:8c [PTK=CCMP GTK=CCMP]
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to bc:30:d9:8a:2e:8c completed [id=0 id_str=]
    D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0520] device (wlp3s0): supplicant interface state: associating -> completed
    D HH:41:35 name_device: kernel: wlp3s0: Limiting TX power to 20 (20 - 0) dBm as advertised by bc:30:d9:8a:2e:8c
    D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-50 noise=9999 txrate=1000
    D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session opened for user root by (uid=0)
    D HH:42:01 name_device: CRON[5108]: (root) CMD ( test -x /etc/cron.daily/popularity-contest && /etc/cron.daily/popularity-contest --crond)
    D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session closed for user root
    D HH:42:16 name_device: NetworkManager[1201]: <info> [1545896536.5760] audit: op="statistics" arg="refresh-rate-ms" pid=2363 uid=1000 result="success"
    D HH:42:18 name_device: NetworkManager[1201]: <info> [1545896538.4280] device (wlp3s0): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed')









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    put on hold as off-topic by karel, DK Bose, Kulfy, Eric Carvalho, Thomas Dec 28 '18 at 12:50


    This question appears to be off-topic. The users who voted to close gave this specific reason:


    • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – karel, DK Bose, Kulfy, Eric Carvalho, Thomas

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      My WiFi constantly loses the ability to talk to the DNS (is this understandable?) and it looks like it has lost connection at all. I did a journalctl --follow, but I don't fully understand the messages. There are plenty of them, so I'm trying to filter them.



      By the way nm --version:



      GNU nm (GNU Binutils for Ubuntu) 2.30


      To me it seems like there happens an error for getting addresses from DNS, then I don't get any response anymore, disconnect it manually and try to reconnect (two manual steps), but this fails. Is anyone more familiar with the network manager, DNS and DHCP stuff and does see an identifiable error or misconiguration?



      D HH:33:19 name_device: dhclient[2811]: DHCPREQUEST of 192.168.2.100 on wlp3s0 to 255.255.255.255 port 67 (xid=0x36d6a67e)
      D HH:33:19 name_device: avahi-daemon[1134]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::dc0b:8e7a:5f65:1656.
      D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv6 with address 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9.
      D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9 on wlp3s0.*.
      D HH:33:19 name_device: avahi-daemon[1134]: Withdrawing address record for fe80::dc0b:8e7a:5f65:1656 on wlp3s0.
      D HH:33:19 name_device: dhclient[2811]: DHCPACK of 192.168.2.100 from 192.168.2.1
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9717] dhcp4 (wlp3s0): address 192.168.2.100
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): plen 24 (255.255.255.0)
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): gateway 192.168.2.1
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): lease time 1814400
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): nameserver '192.168.2.1'
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): domain name 'speedport.ip'
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): state changed unknown -> bound
      D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.2.100.
      D HH:33:19 name_device: avahi-daemon[1134]: New relevant interface wlp3s0.IPv4 for mDNS.
      D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 192.168.2.100 on wlp3s0.IPv4.
      D HH:33:19 name_device: dhclient[2811]: bound to 192.168.2.100 -- renewal in 761842 seconds.
      D HH:33:20 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:f0b4:3182:31ac:d923 on wlp3s0.*.
      D HH:33:20 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 2040ms.
      D HH:33:22 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 4270ms.
      D HH:33:26 name_device: systemd[1]: Starting Stop ureadahead data collection...
      D HH:33:26 name_device: systemd[1]: Started Stop ureadahead data collection.
      D HH:33:26 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 8270ms.
      D HH:33:34 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 17160ms.
      D HH:33:52 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 33780ms.
      D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5206] settings-connection[0x55b1ebb4d360,027032e5-54ba-4b7e-ae11-26100c4dddcf]: write: successfully updated (keyfile: update /etc/NetworkManager/system-connections/WLAN-235212 (027032e5-54ba-4b7e-ae11-26100c4dddcf,"WLAN-235212"))
      D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5215] audit: op="connection-update" uuid="027032e5-54ba-4b7e-ae11-26100c4dddcf" name="WLAN-235212" args="ipv6.may-fail" pid=2859 uid=1000 result="success"
      D HH:34:03 name_device: NetworkManager[1201]: <warn> [1545896043.4648] dhcp6 (wlp3s0): request timed out
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4649] dhcp6 (wlp3s0): state changed unknown -> timeout
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): canceled DHCP transaction, DHCP client pid 2825
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): state changed timeout -> done
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4686] device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4708] device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4714] device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4718] manager: NetworkManager state is now CONNECTED_LOCAL
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4836] manager: NetworkManager state is now CONNECTED_SITE
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv4 routing and DNS
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv6 routing and DNS
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4843] device (wlp3s0): Activation: successful, device activated.
      D HH:34:03 name_device: dbus-daemon[1141]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.17' (uid=0 pid=1201 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4859] manager: NetworkManager state is now CONNECTED_GLOBAL
      D HH:34:03 name_device: systemd[1]: Starting Network Manager Script Dispatcher Service...
      D HH:34:03 name_device: systemd[1]: Starting resolvconf-pull-resolved.service...
      D HH:34:03 name_device: org.kde.kdeconnect[2250]: kdeconnect.core: Broadcasting identity packet
      D HH:34:03 name_device: dbus-daemon[1141]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
      D HH:34:03 name_device: systemd[1]: Started Network Manager Script Dispatcher Service.
      D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: new request (1 scripts)
      D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: start running ordered scripts...
      D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': new request (1 scripts)
      D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent (instance -).
      D HH:34:03 name_device: postfix/postfix-script[3077]: refreshing the Postfix mail system
      D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': start running ordered scripts...
      D HH:34:03 name_device: postfix/master[1950]: reload -- version 3.3.0, configuration /etc/postfix
      D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent (instance -).
      D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent.
      D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent.
      D HH:34:03 name_device: systemd[1]: Started resolvconf-pull-resolved.service.
      D HH:34:27 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=9999 txrate=121500
      D HH:34:32 name_device: systemd-timesyncd[905]: Synchronized to time server [2001:67c:1560:8003::c7]:123 (ntp.ubuntu.com).
      D HH:35:29 name_device: dbus-daemon[2250]: [session uid=1000 pid=2250] Activated service 'org.kde.runners.baloo' failed: Process org.kde.runners.baloo exited with status 255
      D HH:37:31 name_device: anacron[1123]: Job `cron.daily' started
      D HH:37:31 name_device: anacron[3659]: Updated timestamp for job `cron.daily' to 2018-12-27
      D HH:37:31 name_device: cracklib[3682]: no dictionary update necessary.
      D HH:37:31 name_device: systemd[1]: Stopping Make remote CUPS printers available locally...
      D HH:37:31 name_device: systemd[1]: Stopped Make remote CUPS printers available locally.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler...
      D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Closed CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.

      # what?
      D HH:37:31 name_device: systemd[1]: Listening on CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started Make remote CUPS printers available locally.

      # looks like a call stack?
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/proc_inode_cache/cgroup/proc_inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0005824/cgroup/task_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0002048/cgroup/kmalloc-2048(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000128/cgroup/eventpoll_epi(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000192/cgroup/kmalloc-192(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000072/cgroup/eventpoll_pwq(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(880:cups.service)"
      D HH:37:32 name_device: rsyslogd[1215]: [origin software="rsyslogd" swVersion="8.32.0" x-pid="1215" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
      D HH:37:37 name_device: anacron[1123]: Job `cron.daily' terminated
      D HH:37:37 name_device: anacron[1123]: Normal exit (1 job run)

      # looks like a call stack?
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(802:anacron.service)"
      D HH:37:57 name_device: PackageKit[2478]: uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
      D HH:37:57 name_device: PackageKit[2478]: uid 1000 obtained auth for org.freedesktop.packagekit.system-sources-refresh
      D HH:37:57 name_device: systemd-resolved[896]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

      # 6 more of them
      D HH:38:06 name_device: PackageKit[2478]: refresh-cache transaction /10658_bdadeccb from uid 1000 finished with success after 9012ms
      D HH:38:08 name_device: packagekitd[2478]: Starting pkgProblemResolver with broken count: 0
      D HH:38:08 name_device: packagekitd[2478]: Starting 2 pkgProblemResolver with broken count: 0
      D HH:38:08 name_device: packagekitd[2478]: Done
      D HH:38:08 name_device: PackageKit[2478]: get-updates transaction /10659_dabaeeee from uid 1000 finished with success after 1422ms
      D HH:38:18 name_device: kernel: wlp3s0: AP bc:30:d9:8a:2e:8c changed bandwidth, new config is 2462 MHz, width 1 (2462/0 MHz)
      D HH:38:46 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:38:56 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
      D HH:39:14 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:39:23 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
      D HH:39:35 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      # many more of them, usually every ~5 sec

      D HH:41:30 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:31 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:31 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:41:32 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:33 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:34 name_device: kernel: wlp3s0: deauthenticated from bc:30:d9:8a:2e:8c (Reason: 2=PREV_AUTH_NOT_VALID)
      D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=bc:30:d9:8a:2e:8c reason=2
      D HH:41:34 name_device: NetworkManager[1201]: <warn> [1545896494.3523] sup-iface[0x55b1ebb55190,wlp3s0]: connection disconnected (reason 2)
      D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
      D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.3723] device (wlp3s0): supplicant interface state: completed -> disconnected
      D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.4575] device (wlp3s0): supplicant interface state: disconnected -> scanning
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: SME: Trying to authenticate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
      D HH:41:35 name_device: kernel: wlp3s0: authenticate with bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: kernel: wlp3s0: send auth to bc:30:d9:8a:2e:8c (try 1/3)
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0105] device (wlp3s0): supplicant interface state: scanning -> authenticating
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Trying to associate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
      D HH:41:35 name_device: kernel: wlp3s0: authenticated
      D HH:41:35 name_device: kernel: wlp3s0: associate with bc:30:d9:8a:2e:8c (try 1/3)
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0173] device (wlp3s0): supplicant interface state: authenticating -> associating
      D HH:41:35 name_device: kernel: wlp3s0: RX AssocResp from bc:30:d9:8a:2e:8c (capab=0x1431 status=0 aid=2)
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Associated with bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE type=COUNTRY alpha2=DE
      D HH:41:35 name_device: kernel: wlp3s0: associated
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Key negotiation completed with bc:30:d9:8a:2e:8c [PTK=CCMP GTK=CCMP]
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to bc:30:d9:8a:2e:8c completed [id=0 id_str=]
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0520] device (wlp3s0): supplicant interface state: associating -> completed
      D HH:41:35 name_device: kernel: wlp3s0: Limiting TX power to 20 (20 - 0) dBm as advertised by bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-50 noise=9999 txrate=1000
      D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session opened for user root by (uid=0)
      D HH:42:01 name_device: CRON[5108]: (root) CMD ( test -x /etc/cron.daily/popularity-contest && /etc/cron.daily/popularity-contest --crond)
      D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session closed for user root
      D HH:42:16 name_device: NetworkManager[1201]: <info> [1545896536.5760] audit: op="statistics" arg="refresh-rate-ms" pid=2363 uid=1000 result="success"
      D HH:42:18 name_device: NetworkManager[1201]: <info> [1545896538.4280] device (wlp3s0): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed')









      share|improve this question













      My WiFi constantly loses the ability to talk to the DNS (is this understandable?) and it looks like it has lost connection at all. I did a journalctl --follow, but I don't fully understand the messages. There are plenty of them, so I'm trying to filter them.



      By the way nm --version:



      GNU nm (GNU Binutils for Ubuntu) 2.30


      To me it seems like there happens an error for getting addresses from DNS, then I don't get any response anymore, disconnect it manually and try to reconnect (two manual steps), but this fails. Is anyone more familiar with the network manager, DNS and DHCP stuff and does see an identifiable error or misconiguration?



      D HH:33:19 name_device: dhclient[2811]: DHCPREQUEST of 192.168.2.100 on wlp3s0 to 255.255.255.255 port 67 (xid=0x36d6a67e)
      D HH:33:19 name_device: avahi-daemon[1134]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::dc0b:8e7a:5f65:1656.
      D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv6 with address 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9.
      D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:77b3:5013:f122:1d9 on wlp3s0.*.
      D HH:33:19 name_device: avahi-daemon[1134]: Withdrawing address record for fe80::dc0b:8e7a:5f65:1656 on wlp3s0.
      D HH:33:19 name_device: dhclient[2811]: DHCPACK of 192.168.2.100 from 192.168.2.1
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9717] dhcp4 (wlp3s0): address 192.168.2.100
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): plen 24 (255.255.255.0)
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): gateway 192.168.2.1
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9718] dhcp4 (wlp3s0): lease time 1814400
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): nameserver '192.168.2.1'
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): domain name 'speedport.ip'
      D HH:33:19 name_device: NetworkManager[1201]: <info> [1545895999.9719] dhcp4 (wlp3s0): state changed unknown -> bound
      D HH:33:19 name_device: avahi-daemon[1134]: Joining mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.2.100.
      D HH:33:19 name_device: avahi-daemon[1134]: New relevant interface wlp3s0.IPv4 for mDNS.
      D HH:33:19 name_device: avahi-daemon[1134]: Registering new address record for 192.168.2.100 on wlp3s0.IPv4.
      D HH:33:19 name_device: dhclient[2811]: bound to 192.168.2.100 -- renewal in 761842 seconds.
      D HH:33:20 name_device: avahi-daemon[1134]: Registering new address record for 2003:ec:2bd0:b0bc:f0b4:3182:31ac:d923 on wlp3s0.*.
      D HH:33:20 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 2040ms.
      D HH:33:22 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 4270ms.
      D HH:33:26 name_device: systemd[1]: Starting Stop ureadahead data collection...
      D HH:33:26 name_device: systemd[1]: Started Stop ureadahead data collection.
      D HH:33:26 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 8270ms.
      D HH:33:34 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 17160ms.
      D HH:33:52 name_device: dhclient[2825]: XMT: Info-Request on wlp3s0, interval 33780ms.
      D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5206] settings-connection[0x55b1ebb4d360,027032e5-54ba-4b7e-ae11-26100c4dddcf]: write: successfully updated (keyfile: update /etc/NetworkManager/system-connections/WLAN-235212 (027032e5-54ba-4b7e-ae11-26100c4dddcf,"WLAN-235212"))
      D HH:34:01 name_device: NetworkManager[1201]: <info> [1545896041.5215] audit: op="connection-update" uuid="027032e5-54ba-4b7e-ae11-26100c4dddcf" name="WLAN-235212" args="ipv6.may-fail" pid=2859 uid=1000 result="success"
      D HH:34:03 name_device: NetworkManager[1201]: <warn> [1545896043.4648] dhcp6 (wlp3s0): request timed out
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4649] dhcp6 (wlp3s0): state changed unknown -> timeout
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): canceled DHCP transaction, DHCP client pid 2825
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4669] dhcp6 (wlp3s0): state changed timeout -> done
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4686] device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4708] device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4714] device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4718] manager: NetworkManager state is now CONNECTED_LOCAL
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4836] manager: NetworkManager state is now CONNECTED_SITE
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv4 routing and DNS
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4838] policy: set 'WLAN-235212' (wlp3s0) as default for IPv6 routing and DNS
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4843] device (wlp3s0): Activation: successful, device activated.
      D HH:34:03 name_device: dbus-daemon[1141]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.17' (uid=0 pid=1201 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
      D HH:34:03 name_device: NetworkManager[1201]: <info> [1545896043.4859] manager: NetworkManager state is now CONNECTED_GLOBAL
      D HH:34:03 name_device: systemd[1]: Starting Network Manager Script Dispatcher Service...
      D HH:34:03 name_device: systemd[1]: Starting resolvconf-pull-resolved.service...
      D HH:34:03 name_device: org.kde.kdeconnect[2250]: kdeconnect.core: Broadcasting identity packet
      D HH:34:03 name_device: dbus-daemon[1141]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
      D HH:34:03 name_device: systemd[1]: Started Network Manager Script Dispatcher Service.
      D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: new request (1 scripts)
      D HH:34:03 name_device: nm-dispatcher[2884]: req:1 'up' [wlp3s0]: start running ordered scripts...
      D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': new request (1 scripts)
      D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent (instance -).
      D HH:34:03 name_device: postfix/postfix-script[3077]: refreshing the Postfix mail system
      D HH:34:03 name_device: nm-dispatcher[2884]: req:2 'connectivity-change': start running ordered scripts...
      D HH:34:03 name_device: postfix/master[1950]: reload -- version 3.3.0, configuration /etc/postfix
      D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent (instance -).
      D HH:34:03 name_device: systemd[1]: Reloading Postfix Mail Transport Agent.
      D HH:34:03 name_device: systemd[1]: Reloaded Postfix Mail Transport Agent.
      D HH:34:03 name_device: systemd[1]: Started resolvconf-pull-resolved.service.
      D HH:34:27 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=9999 txrate=121500
      D HH:34:32 name_device: systemd-timesyncd[905]: Synchronized to time server [2001:67c:1560:8003::c7]:123 (ntp.ubuntu.com).
      D HH:35:29 name_device: dbus-daemon[2250]: [session uid=1000 pid=2250] Activated service 'org.kde.runners.baloo' failed: Process org.kde.runners.baloo exited with status 255
      D HH:37:31 name_device: anacron[1123]: Job `cron.daily' started
      D HH:37:31 name_device: anacron[3659]: Updated timestamp for job `cron.daily' to 2018-12-27
      D HH:37:31 name_device: cracklib[3682]: no dictionary update necessary.
      D HH:37:31 name_device: systemd[1]: Stopping Make remote CUPS printers available locally...
      D HH:37:31 name_device: systemd[1]: Stopped Make remote CUPS printers available locally.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler...
      D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Closed CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.

      # what?
      D HH:37:31 name_device: systemd[1]: Listening on CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopped CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Stopping CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started CUPS Scheduler.
      D HH:37:31 name_device: systemd[1]: Started Make remote CUPS printers available locally.

      # looks like a call stack?
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/proc_inode_cache/cgroup/proc_inode_cache(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0005824/cgroup/task_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0002048/cgroup/kmalloc-2048(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(1101:cups-browsed.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000128/cgroup/eventpoll_epi(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000192/cgroup/kmalloc-192(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000072/cgroup/eventpoll_pwq(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0001024/cgroup/kmalloc-1024(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(880:cups.service)"
      D HH:37:32 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(880:cups.service)"
      D HH:37:32 name_device: rsyslogd[1215]: [origin software="rsyslogd" swVersion="8.32.0" x-pid="1215" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
      D HH:37:37 name_device: anacron[1123]: Job `cron.daily' terminated
      D HH:37:37 name_device: anacron[1123]: Normal exit (1 job run)

      # looks like a call stack?
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/sock_inode_cache/cgroup/sock_inode_cache(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000208/cgroup/vm_area_struct(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0002112/cgroup/mm_struct(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000192/cgroup/cred_jar(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000256/cgroup/filp(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000512/cgroup/kmalloc-512(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:0000256/cgroup/kmalloc-256(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/anon_vma/cgroup/anon_vma(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/inode_cache/cgroup/inode_cache(802:anacron.service)"
      D HH:37:37 name_device: snapd[1224]: udevmon.go:184: udev monitor observed remove event for unknown device "/sys/kernel/slab/:A-0000064/cgroup/pid(802:anacron.service)"
      D HH:37:57 name_device: PackageKit[2478]: uid 1000 is trying to obtain org.freedesktop.packagekit.system-sources-refresh auth (only_trusted:0)
      D HH:37:57 name_device: PackageKit[2478]: uid 1000 obtained auth for org.freedesktop.packagekit.system-sources-refresh
      D HH:37:57 name_device: systemd-resolved[896]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

      # 6 more of them
      D HH:38:06 name_device: PackageKit[2478]: refresh-cache transaction /10658_bdadeccb from uid 1000 finished with success after 9012ms
      D HH:38:08 name_device: packagekitd[2478]: Starting pkgProblemResolver with broken count: 0
      D HH:38:08 name_device: packagekitd[2478]: Starting 2 pkgProblemResolver with broken count: 0
      D HH:38:08 name_device: packagekitd[2478]: Done
      D HH:38:08 name_device: PackageKit[2478]: get-updates transaction /10659_dabaeeee from uid 1000 finished with success after 1422ms
      D HH:38:18 name_device: kernel: wlp3s0: AP bc:30:d9:8a:2e:8c changed bandwidth, new config is 2462 MHz, width 1 (2462/0 MHz)
      D HH:38:46 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:38:56 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
      D HH:39:14 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:39:23 name_device: systemd-resolved[896]: Using degraded feature set (TCP) for DNS server fe80::1%3.
      D HH:39:35 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      # many more of them, usually every ~5 sec

      D HH:41:30 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:31 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:31 name_device: systemd-resolved[896]: Using degraded feature set (UDP) for DNS server fe80::1%3.
      D HH:41:32 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:33 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Group rekeying completed with bc:30:d9:8a:2e:8c [GTK=CCMP]
      D HH:41:34 name_device: kernel: wlp3s0: deauthenticated from bc:30:d9:8a:2e:8c (Reason: 2=PREV_AUTH_NOT_VALID)
      D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=bc:30:d9:8a:2e:8c reason=2
      D HH:41:34 name_device: NetworkManager[1201]: <warn> [1545896494.3523] sup-iface[0x55b1ebb55190,wlp3s0]: connection disconnected (reason 2)
      D HH:41:34 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
      D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.3723] device (wlp3s0): supplicant interface state: completed -> disconnected
      D HH:41:34 name_device: NetworkManager[1201]: <info> [1545896494.4575] device (wlp3s0): supplicant interface state: disconnected -> scanning
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: SME: Trying to authenticate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
      D HH:41:35 name_device: kernel: wlp3s0: authenticate with bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: kernel: wlp3s0: send auth to bc:30:d9:8a:2e:8c (try 1/3)
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0105] device (wlp3s0): supplicant interface state: scanning -> authenticating
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Trying to associate with bc:30:d9:8a:2e:8c (SSID='WLAN-235212' freq=2462 MHz)
      D HH:41:35 name_device: kernel: wlp3s0: authenticated
      D HH:41:35 name_device: kernel: wlp3s0: associate with bc:30:d9:8a:2e:8c (try 1/3)
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0173] device (wlp3s0): supplicant interface state: authenticating -> associating
      D HH:41:35 name_device: kernel: wlp3s0: RX AssocResp from bc:30:d9:8a:2e:8c (capab=0x1431 status=0 aid=2)
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: Associated with bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE type=COUNTRY alpha2=DE
      D HH:41:35 name_device: kernel: wlp3s0: associated
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: WPA: Key negotiation completed with bc:30:d9:8a:2e:8c [PTK=CCMP GTK=CCMP]
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-CONNECTED - Connection to bc:30:d9:8a:2e:8c completed [id=0 id_str=]
      D HH:41:35 name_device: NetworkManager[1201]: <info> [1545896495.0520] device (wlp3s0): supplicant interface state: associating -> completed
      D HH:41:35 name_device: kernel: wlp3s0: Limiting TX power to 20 (20 - 0) dBm as advertised by bc:30:d9:8a:2e:8c
      D HH:41:35 name_device: wpa_supplicant[1220]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-50 noise=9999 txrate=1000
      D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session opened for user root by (uid=0)
      D HH:42:01 name_device: CRON[5108]: (root) CMD ( test -x /etc/cron.daily/popularity-contest && /etc/cron.daily/popularity-contest --crond)
      D HH:42:01 name_device: CRON[5102]: pam_unix(cron:session): session closed for user root
      D HH:42:16 name_device: NetworkManager[1201]: <info> [1545896536.5760] audit: op="statistics" arg="refresh-rate-ms" pid=2363 uid=1000 result="success"
      D HH:42:18 name_device: NetworkManager[1201]: <info> [1545896538.4280] device (wlp3s0): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed')






      18.04 network-manager dns






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      asked Dec 27 '18 at 8:28









      BairDev

      1134




      1134




      put on hold as off-topic by karel, DK Bose, Kulfy, Eric Carvalho, Thomas Dec 28 '18 at 12:50


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – karel, DK Bose, Kulfy, Eric Carvalho, Thomas

      If this question can be reworded to fit the rules in the help center, please edit the question.




      put on hold as off-topic by karel, DK Bose, Kulfy, Eric Carvalho, Thomas Dec 28 '18 at 12:50


      This question appears to be off-topic. The users who voted to close gave this specific reason:


      • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – karel, DK Bose, Kulfy, Eric Carvalho, Thomas

      If this question can be reworded to fit the rules in the help center, please edit the question.



























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