Ethernet Lights Not On When Cable Connected And Not Working












2















I have two OS and second OS connects to internet easily, so it's not a hardware problem.



The output of lspci is:



00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
23:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
23:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
24:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
25:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)


lshw -C network:



 *-network               
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:24:00.0
logical name: wlan0
version: 01
serial: 74:de:2b:02:0b:da
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.18.2-031802-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 memory:d4600000-d460ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:25:00.0
logical name: eth0
version: 06
serial: 10:1f:74:e3:50:5a
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.100 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:29 ioport:2000(size=256) memory:d4404000-d4404fff memory:d4400000-d4403fff


ifup eth0



Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/10:1f:74:e3:50:5a
Sending on LPF/eth0/10:1f:74:e3:50:5a
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 (xid=0x78a08d03)
...
(infinite, continue for ever)


ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:298 errors:0 dropped:0 overruns:0 frame:0
TX packets:298 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23133 (23.1 KB) TX bytes:23133 (23.1 KB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vim /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


cat /etc/resolv.conf



# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1


route -n



Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface


I'm also try static IP address but still have the problem. Please help me, I really do not have any other idea!



UPDATE



When I run ifup eth0, syslog output is



Jan 16 22:42:34 DEMON kernel: [16477.474586] r8169 0000:25:00.0 eth0: link down
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.1.100.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: New relevant interface eth0.IPv4 for mDNS.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Registering new address record for 192.168.1.100 on eth0.IPv4.
Jan 16 22:42:34 DEMON kernel: [16477.475316] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready


So I try Linux kernel version 14 and 18, but both have same problem.
Any idea?
UPDATE2



I try to use static IP adress so change interfaces:



auto lo
iface lo inet loopback

auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth1 up # line maintained by pppoeconf
dns-nameservers 8.8.8.8 8.8.4.4
provider dsl-provider

auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4


Then ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:439 errors:0 dropped:0 overruns:0 frame:0
TX packets:439 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34837 (34.8 KB) TX bytes:34837 (34.8 KB)

ppp0 Link encap:Point-to-Point Protocol
inet addr:37.254.165.125 P-t-P:37.254.128.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:7259 errors:0 dropped:0 overruns:0 frame:0
TX packets:8600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:4900816 (4.9 MB) TX bytes:1303955 (1.3 MB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


sudo ethtool eth0



Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no


UPDATE 2



My laptop have problem so I connect laptop to pc (rather than laptop to ADSL modem) for now every thing is OK. But how can I connect laptop to ADSL modem?
This problem related to Ubuntu because I check several time on Windows 8 and have no problem.
I reset ADSL modem router but still have the same problem.



UPDATE3



I can detect Ethernet for once and every think was OK, but when I restart still have the same problem. Should be a command to fix this issue :(










share|improve this question

























  • Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

    – user366885
    Jan 16 '15 at 15:53











  • @Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

    – Daniyal
    Jan 16 '15 at 17:59











  • And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

    – Marcin Kaminski
    Jan 16 '15 at 21:00











  • @MarcinKaminski connected to the same network cable. Thanks for your attention.

    – Daniyal
    Jan 16 '15 at 21:03











  • First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

    – Marcin Kaminski
    Jan 16 '15 at 21:08
















2















I have two OS and second OS connects to internet easily, so it's not a hardware problem.



The output of lspci is:



00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
23:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
23:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
24:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
25:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)


lshw -C network:



 *-network               
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:24:00.0
logical name: wlan0
version: 01
serial: 74:de:2b:02:0b:da
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.18.2-031802-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 memory:d4600000-d460ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:25:00.0
logical name: eth0
version: 06
serial: 10:1f:74:e3:50:5a
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.100 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:29 ioport:2000(size=256) memory:d4404000-d4404fff memory:d4400000-d4403fff


ifup eth0



Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/10:1f:74:e3:50:5a
Sending on LPF/eth0/10:1f:74:e3:50:5a
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 (xid=0x78a08d03)
...
(infinite, continue for ever)


ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:298 errors:0 dropped:0 overruns:0 frame:0
TX packets:298 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23133 (23.1 KB) TX bytes:23133 (23.1 KB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vim /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


cat /etc/resolv.conf



# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1


route -n



Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface


I'm also try static IP address but still have the problem. Please help me, I really do not have any other idea!



UPDATE



When I run ifup eth0, syslog output is



Jan 16 22:42:34 DEMON kernel: [16477.474586] r8169 0000:25:00.0 eth0: link down
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.1.100.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: New relevant interface eth0.IPv4 for mDNS.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Registering new address record for 192.168.1.100 on eth0.IPv4.
Jan 16 22:42:34 DEMON kernel: [16477.475316] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready


So I try Linux kernel version 14 and 18, but both have same problem.
Any idea?
UPDATE2



I try to use static IP adress so change interfaces:



auto lo
iface lo inet loopback

auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth1 up # line maintained by pppoeconf
dns-nameservers 8.8.8.8 8.8.4.4
provider dsl-provider

auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4


Then ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:439 errors:0 dropped:0 overruns:0 frame:0
TX packets:439 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34837 (34.8 KB) TX bytes:34837 (34.8 KB)

ppp0 Link encap:Point-to-Point Protocol
inet addr:37.254.165.125 P-t-P:37.254.128.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:7259 errors:0 dropped:0 overruns:0 frame:0
TX packets:8600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:4900816 (4.9 MB) TX bytes:1303955 (1.3 MB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


sudo ethtool eth0



Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no


UPDATE 2



My laptop have problem so I connect laptop to pc (rather than laptop to ADSL modem) for now every thing is OK. But how can I connect laptop to ADSL modem?
This problem related to Ubuntu because I check several time on Windows 8 and have no problem.
I reset ADSL modem router but still have the same problem.



UPDATE3



I can detect Ethernet for once and every think was OK, but when I restart still have the same problem. Should be a command to fix this issue :(










share|improve this question

























  • Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

    – user366885
    Jan 16 '15 at 15:53











  • @Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

    – Daniyal
    Jan 16 '15 at 17:59











  • And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

    – Marcin Kaminski
    Jan 16 '15 at 21:00











  • @MarcinKaminski connected to the same network cable. Thanks for your attention.

    – Daniyal
    Jan 16 '15 at 21:03











  • First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

    – Marcin Kaminski
    Jan 16 '15 at 21:08














2












2








2


1






I have two OS and second OS connects to internet easily, so it's not a hardware problem.



The output of lspci is:



00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
23:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
23:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
24:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
25:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)


lshw -C network:



 *-network               
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:24:00.0
logical name: wlan0
version: 01
serial: 74:de:2b:02:0b:da
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.18.2-031802-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 memory:d4600000-d460ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:25:00.0
logical name: eth0
version: 06
serial: 10:1f:74:e3:50:5a
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.100 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:29 ioport:2000(size=256) memory:d4404000-d4404fff memory:d4400000-d4403fff


ifup eth0



Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/10:1f:74:e3:50:5a
Sending on LPF/eth0/10:1f:74:e3:50:5a
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 (xid=0x78a08d03)
...
(infinite, continue for ever)


ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:298 errors:0 dropped:0 overruns:0 frame:0
TX packets:298 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23133 (23.1 KB) TX bytes:23133 (23.1 KB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vim /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


cat /etc/resolv.conf



# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1


route -n



Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface


I'm also try static IP address but still have the problem. Please help me, I really do not have any other idea!



UPDATE



When I run ifup eth0, syslog output is



Jan 16 22:42:34 DEMON kernel: [16477.474586] r8169 0000:25:00.0 eth0: link down
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.1.100.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: New relevant interface eth0.IPv4 for mDNS.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Registering new address record for 192.168.1.100 on eth0.IPv4.
Jan 16 22:42:34 DEMON kernel: [16477.475316] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready


So I try Linux kernel version 14 and 18, but both have same problem.
Any idea?
UPDATE2



I try to use static IP adress so change interfaces:



auto lo
iface lo inet loopback

auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth1 up # line maintained by pppoeconf
dns-nameservers 8.8.8.8 8.8.4.4
provider dsl-provider

auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4


Then ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:439 errors:0 dropped:0 overruns:0 frame:0
TX packets:439 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34837 (34.8 KB) TX bytes:34837 (34.8 KB)

ppp0 Link encap:Point-to-Point Protocol
inet addr:37.254.165.125 P-t-P:37.254.128.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:7259 errors:0 dropped:0 overruns:0 frame:0
TX packets:8600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:4900816 (4.9 MB) TX bytes:1303955 (1.3 MB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


sudo ethtool eth0



Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no


UPDATE 2



My laptop have problem so I connect laptop to pc (rather than laptop to ADSL modem) for now every thing is OK. But how can I connect laptop to ADSL modem?
This problem related to Ubuntu because I check several time on Windows 8 and have no problem.
I reset ADSL modem router but still have the same problem.



UPDATE3



I can detect Ethernet for once and every think was OK, but when I restart still have the same problem. Should be a command to fix this issue :(










share|improve this question
















I have two OS and second OS connects to internet easily, so it's not a hardware problem.



The output of lspci is:



00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
23:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
23:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
24:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
25:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)


lshw -C network:



 *-network               
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:24:00.0
logical name: wlan0
version: 01
serial: 74:de:2b:02:0b:da
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.18.2-031802-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:19 memory:d4600000-d460ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:25:00.0
logical name: eth0
version: 06
serial: 10:1f:74:e3:50:5a
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.100 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:29 ioport:2000(size=256) memory:d4404000-d4404fff memory:d4400000-d4403fff


ifup eth0



Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/10:1f:74:e3:50:5a
Sending on LPF/eth0/10:1f:74:e3:50:5a
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21 (xid=0x78a08d03)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 (xid=0x78a08d03)
...
(infinite, continue for ever)


ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:298 errors:0 dropped:0 overruns:0 frame:0
TX packets:298 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23133 (23.1 KB) TX bytes:23133 (23.1 KB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vim /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp


cat /etc/resolv.conf



# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1


route -n



Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface


I'm also try static IP address but still have the problem. Please help me, I really do not have any other idea!



UPDATE



When I run ifup eth0, syslog output is



Jan 16 22:42:34 DEMON kernel: [16477.474586] r8169 0000:25:00.0 eth0: link down
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.1.100.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: New relevant interface eth0.IPv4 for mDNS.
Jan 16 22:42:34 DEMON avahi-daemon[1167]: Registering new address record for 192.168.1.100 on eth0.IPv4.
Jan 16 22:42:34 DEMON kernel: [16477.475316] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready


So I try Linux kernel version 14 and 18, but both have same problem.
Any idea?
UPDATE2



I try to use static IP adress so change interfaces:



auto lo
iface lo inet loopback

auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth1 up # line maintained by pppoeconf
dns-nameservers 8.8.8.8 8.8.4.4
provider dsl-provider

auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4


Then ifconfig -a



eth0      Link encap:Ethernet  HWaddr 10:1f:74:e3:50:5a  
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:439 errors:0 dropped:0 overruns:0 frame:0
TX packets:439 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34837 (34.8 KB) TX bytes:34837 (34.8 KB)

ppp0 Link encap:Point-to-Point Protocol
inet addr:37.254.165.125 P-t-P:37.254.128.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:7259 errors:0 dropped:0 overruns:0 frame:0
TX packets:8600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:4900816 (4.9 MB) TX bytes:1303955 (1.3 MB)

wlan0 Link encap:Ethernet HWaddr 74:de:2b:02:0b:da
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


sudo ethtool eth0



Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no


UPDATE 2



My laptop have problem so I connect laptop to pc (rather than laptop to ADSL modem) for now every thing is OK. But how can I connect laptop to ADSL modem?
This problem related to Ubuntu because I check several time on Windows 8 and have no problem.
I reset ADSL modem router but still have the same problem.



UPDATE3



I can detect Ethernet for once and every think was OK, but when I restart still have the same problem. Should be a command to fix this issue :(







networking internet network-manager ethernet interface






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 17 '15 at 6:16







Daniyal

















asked Jan 16 '15 at 14:08









DaniyalDaniyal

60621129




60621129













  • Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

    – user366885
    Jan 16 '15 at 15:53











  • @Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

    – Daniyal
    Jan 16 '15 at 17:59











  • And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

    – Marcin Kaminski
    Jan 16 '15 at 21:00











  • @MarcinKaminski connected to the same network cable. Thanks for your attention.

    – Daniyal
    Jan 16 '15 at 21:03











  • First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

    – Marcin Kaminski
    Jan 16 '15 at 21:08



















  • Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

    – user366885
    Jan 16 '15 at 15:53











  • @Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

    – Daniyal
    Jan 16 '15 at 17:59











  • And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

    – Marcin Kaminski
    Jan 16 '15 at 21:00











  • @MarcinKaminski connected to the same network cable. Thanks for your attention.

    – Daniyal
    Jan 16 '15 at 21:03











  • First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

    – Marcin Kaminski
    Jan 16 '15 at 21:08

















Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

– user366885
Jan 16 '15 at 15:53





Hi it looks to me that your eth0 does not get an IP address. Are you sure that a DHCP server is running on that cable? The second OS is it connected to the same networkcable or does it use wifi?

– user366885
Jan 16 '15 at 15:53













@Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

– Daniyal
Jan 16 '15 at 17:59





@Stefan I have a simple network, just is a ADSL modem. Yeah, I'm sure.

– Daniyal
Jan 16 '15 at 17:59













And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

– Marcin Kaminski
Jan 16 '15 at 21:00





And the other question: "The second OS is it connected to the same network cable or does it use wifi?" ?

– Marcin Kaminski
Jan 16 '15 at 21:00













@MarcinKaminski connected to the same network cable. Thanks for your attention.

– Daniyal
Jan 16 '15 at 21:03





@MarcinKaminski connected to the same network cable. Thanks for your attention.

– Daniyal
Jan 16 '15 at 21:03













First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

– Marcin Kaminski
Jan 16 '15 at 21:08





First thing to notice is that you don't have a physical link (ethtool's output). There's no point diagnosing anything above this layer before this works. Have you tried connecting this port to another machine's Ethernet port and seeing if you get a link?

– Marcin Kaminski
Jan 16 '15 at 21:08










1 Answer
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Try doing the next steps and change BaseT by 10 100 or 1000 according to your network card:



Ldentify physical eth0 port: ethtool --identify eth0



Look config eth0: ethtool eth0



Force Ethernet to full duplex 100Tx: ethtool -s eth0 speed 100 duplex full autoneg off



ifdown eth0 && ifup eth0
service network restart





share|improve this answer










New contributor




Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















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    1 Answer
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    0














    Try doing the next steps and change BaseT by 10 100 or 1000 according to your network card:



    Ldentify physical eth0 port: ethtool --identify eth0



    Look config eth0: ethtool eth0



    Force Ethernet to full duplex 100Tx: ethtool -s eth0 speed 100 duplex full autoneg off



    ifdown eth0 && ifup eth0
    service network restart





    share|improve this answer










    New contributor




    Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.

























      0














      Try doing the next steps and change BaseT by 10 100 or 1000 according to your network card:



      Ldentify physical eth0 port: ethtool --identify eth0



      Look config eth0: ethtool eth0



      Force Ethernet to full duplex 100Tx: ethtool -s eth0 speed 100 duplex full autoneg off



      ifdown eth0 && ifup eth0
      service network restart





      share|improve this answer










      New contributor




      Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.























        0












        0








        0







        Try doing the next steps and change BaseT by 10 100 or 1000 according to your network card:



        Ldentify physical eth0 port: ethtool --identify eth0



        Look config eth0: ethtool eth0



        Force Ethernet to full duplex 100Tx: ethtool -s eth0 speed 100 duplex full autoneg off



        ifdown eth0 && ifup eth0
        service network restart





        share|improve this answer










        New contributor




        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.










        Try doing the next steps and change BaseT by 10 100 or 1000 according to your network card:



        Ldentify physical eth0 port: ethtool --identify eth0



        Look config eth0: ethtool eth0



        Force Ethernet to full duplex 100Tx: ethtool -s eth0 speed 100 duplex full autoneg off



        ifdown eth0 && ifup eth0
        service network restart






        share|improve this answer










        New contributor




        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









        share|improve this answer



        share|improve this answer








        edited 9 hours ago









        Kevin Bowen

        14.6k155970




        14.6k155970






        New contributor




        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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        answered 9 hours ago









        Luis Eduardo Arcila BonfanteLuis Eduardo Arcila Bonfante

        1




        1




        New contributor




        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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        New contributor





        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.






        Luis Eduardo Arcila Bonfante is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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