interface eth0 disappears after network cable unplug/re-plug
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
High
|
Unassigned |
Bug Description
The following bug is reproducible with linux-image-
When I unplug the Ethernet cable from my laptop, I get the following messages in /var/log/kern.log after a few seconds (~20s):
May 22 13:59:36 host kernel: [ 5498.465626] pciehp 0000:00:
May 22 13:59:36 host kernel: [ 5498.478755] pciehp 0000:00:
May 22 13:59:36 host kernel: [ 5498.598744] pciehp 0000:00:
May 22 13:59:36 host kernel: [ 5498.598755] pciehp 0000:00:
May 22 13:59:36 host kernel: [ 5498.718646] atl1c 0000:06:00.0: MAC state machine can't be idle since disabled for 10ms second
Then, when I re-plug the cable, eth0 does not appear in network manager; there is no message in kern.log.
eth0 does not appear in ifconfig -a
$ ifconfig -a
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:11586 errors:0 dropped:0 overruns:0 frame:0
TX packets:11586 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:16392353 (16.3 MB) TX bytes:16392353 (16.3 MB)
wlan0 Link encap:Ethernet HWaddr 48:5d:xx:xx:xx:xx
inet addr:192.168.xx.xx Bcast:192.168.xx.xx Mask:255.255.255.0
inet6 addr: fe80::xxxx:
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19 errors:0 dropped:0 overruns:0 frame:0
TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:2651 (2.6 KB) TX bytes:12364 (12.3 KB)
I tried to reinitialize networking with the following:
sudo modprobe -r atl1c
sudo modprobe atl1c
Still no eth0 and no message in kern.log
I tried
$ sudo ifup eth0
Ignoring unknown interface eth0=eth0.
Same symptoms occur when I reboot my router, and its Ethernet interface becomes temporarily unavailable.
Only way I found to restore eth0 was rebooting.
---
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: KDE
DistroRelease: Ubuntu 14.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationDate: Installed on 2012-12-29 (873 days ago)
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MachineType: ASUSTeK Computer Inc. N53Jq
NonfreeKernelMo
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.127.12
Tags: trusty
Uname: Linux 3.13.0-53-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-09-05 (259 days ago)
UserGroups: adm admin cdrom dialout disk fuse lpadmin mediatomb plugdev sambashare vboxusers wireshark
_MarkForUpload: True
dmi.bios.date: 01/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N53Jq.211
dmi.board.
dmi.board.name: N53Jq
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: N53Jq
dmi.product.
dmi.sys.vendor: ASUSTeK Computer Inc.
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
tags: | added: kernel-da-key |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1457863
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.