Cfxtrjtrk

The error appears explicitly when launching the nvidia card using bumblebee, and when realtek driver is launched. And I remember correctly, also with the wifi driver. I have no strange behaviors with the machine, it seems to work well. I downgraded the driver and the kernel several times and the error persist. Currently I have the latest's and APT is up-to-date:

                          ./+o+-       david@turing

                  yyyyy- -yyyyyy+      OS: Ubuntu 16.04 xenial

               ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-46-generic

           .++ .:/++++++/-.+sss/`      Uptime: 16m

         .:++o:  /++++++++/:--:/-      Packages: 3466

        o:+o+:++.`..```.-/oo+++++/     Shell: optirun screenfetch

       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080

  .++/+:+oo+o:`             /sssooo.   DE: XFCE

 /+++//+:`oo+o               /::--:.   WM: Compiz

 +/+o+++`o++o               ++////.   WM Theme: Ambiant-MATE

  .++.o+++oo+:`             /dddhhh.   GTK Theme: BlackMATE [GTK2]

       .+.o+oo:.          `oddhhhh+    Icon Theme: elementary-xfce-dark

        +.++o+o``-````.:ohdhhhhh+     Font: Sans 10

         `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-7700HQ CPU @ 3.8GHz

           .o:`.syhhhhhhh/.oo++o`      GPU: GeForce GTX 1050 Ti

               /osyyyyyyo++ooo+++/     RAM: 3103MiB / 15906MiB

                   ````` +oo+++o:    

                          `oo++.     



With nvidia-415

I leave here the a great part of the output of dmesg:

[   11.320704] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0

[   11.320705] snd_hda_codec_realtek hdaudioC0D0:    inputs:

[   11.320706] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19

[   11.320707] snd_hda_codec_realtek hdaudioC0D0:      Headphone Mic=0x1a

[   11.320708] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12

[   11.348139] PKCS#7 signature not signed with a trusted key

[   11.358876] PKCS#7 signature not signed with a trusted key

[   11.359416] PKCS#7 signature not signed with a trusted key

[   11.399690] Bluetooth: hci0: Intel firmware patch completed and activated

[   11.439431] PKCS#7 signature not signed with a trusted key

[   11.447720] PKCS#7 signature not signed with a trusted key

[   11.450533] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[   11.474240] media: Linux media interface: v0.10

[   11.480096] Linux video capture interface: v2.00

[   11.628784] uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:568a)

[   11.629867] uvcvideo 1-12:1.0: Entity type for entity Extension 4 was not initialized!

[   11.629886] uvcvideo 1-12:1.0: Entity type for entity Extension 7 was not initialized!

[   11.629887] uvcvideo 1-12:1.0: Entity type for entity Processing 2 was not initialized!

[   11.629888] uvcvideo 1-12:1.0: Entity type for entity Camera 1 was not initialized!

[   11.629982] input: Integrated Webcam: Integrated W as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input19

[   11.630058] usbcore: registered new interface driver uvcvideo

[   11.630058] USB Video Class driver (1.1.1)

[   11.787465] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

[   11.975100] Adding 8000508k swap on /dev/sda7.  Priority:-2 extents:1 across:8000508k FS

[   11.997623] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)

[   12.196930] audit: type=1400 audit(1552787830.489:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cups-browsed" pid=896 comm="apparmor_parser"

[   12.197360] audit: type=1400 audit(1552787830.489:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=894 comm="apparmor_parser"

[   12.197362] audit: type=1400 audit(1552787830.489:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=894 comm="apparmor_parser"

[   12.197569] audit: type=1400 audit(1552787830.489:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine" pid=888 comm="apparmor_parser"

[   12.197572] audit: type=1400 audit(1552787830.489:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=888 comm="apparmor_parser"

[   12.197950] audit: type=1400 audit(1552787830.489:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=887 comm="apparmor_parser"

[   12.197952] audit: type=1400 audit(1552787830.489:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=887 comm="apparmor_parser"

[   12.197954] audit: type=1400 audit(1552787830.489:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=887 comm="apparmor_parser"

[   12.197956] audit: type=1400 audit(1552787830.489:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=887 comm="apparmor_parser"

[   12.198833] audit: type=1400 audit(1552787830.489:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=921 comm="apparmor_parser"

[   12.722282] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[   12.722283] Bluetooth: BNEP filters: protocol multicast

[   12.722286] Bluetooth: BNEP socket layer initialized

[   12.972202] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   12.981785] hdaps: supported laptop not found!

[   12.981785] hdaps: driver init failed (ret=-19)!

[   13.031013] r8169 0000:02:00.0 enp2s0: link down

[   13.031113] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   13.034813] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.036681] applesmc: supported laptop not found!

[   13.036682] applesmc: driver init failed (ret=-19)!

[   13.102774] acer_wmi: Acer Laptop ACPI-WMI Extras

[   13.102780] acer_wmi: No or unsupported WMI interface, unable to load

[   13.131412] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.597882] nvidia-uvm: Unloaded the UVM driver in 8 mode

[   13.611821] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.712205] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[   13.732227] nvidia-modeset: Unloading

[   13.757402] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[   13.781284] bbswitch: disabling discrete graphics

[   15.694575] Bluetooth: RFCOMM TTY layer initialized

[   15.694579] Bluetooth: RFCOMM socket layer initialized

[   15.694582] Bluetooth: RFCOMM ver 1.11

[   18.098078] Non-volatile memory driver v1.3

[   18.934574] wlp3s0: authenticate with f8:98:b9:19:b9:0c

[   18.937159] wlp3s0: send auth to f8:98:b9:19:b9:0c (try 1/3)

[   18.939361] wlp3s0: authenticated

[   18.940022] wlp3s0: associate with f8:98:b9:19:b9:0c (try 1/3)

[   18.943841] wlp3s0: RX AssocResp from f8:98:b9:19:b9:0c (capab=0x1411 status=0 aid=5)

[   18.949994] wlp3s0: associated

[   18.985699] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

[   19.014024] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by f8:98:b9:19:b9:0c

[   98.270124] bbswitch: enabling discrete graphics

[   98.568294] PKCS#7 signature not signed with a trusted key

[   98.580196] nvidia-nvlink: Nvlink Core is being initialized, major device number 241

[   98.580508] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=none,decodes=none:owns=none

[   98.679985] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  415.27  Thu Dec 20 17:25:03 CST 2018 (using threaded interrupts)

[   98.682947] PKCS#7 signature not signed with a trusted key

[   98.693213] PKCS#7 signature not signed with a trusted key

[   98.694008] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  415.27  Thu Dec 20 17:06:08 CST 2018

[   98.784287] PKCS#7 signature not signed with a trusted key

[   98.793090] PKCS#7 signature not signed with a trusted key

[   98.793562] PKCS#7 signature not signed with a trusted key

[   98.795220] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver

[   98.795222] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1

[   98.893338] PKCS#7 signature not signed with a trusted key

[   98.902801] PKCS#7 signature not signed with a trusted key

[   98.904910] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[  129.503090] nvidia-uvm: Unloaded the UVM driver in 8 mode

[  129.521886] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[  129.561445] nvidia-modeset: Unloading

[  129.585510] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[  129.614159] bbswitch: disabling discrete graphics

[  129.633411] pci_raw_set_power_state: 25 callbacks suppressed

[  129.633414] pci 0000:01:00.0: Refused to change power state, currently in D0