[Lenovo ThinkPad X1 Carbon 20A8] Networking dies

[Jerry Quinn]

I have a fresh install of 14.04 lts on a Lenovo X1 Carbon v2. I've noticed that the wireless network connection will drop and I have to disable and reenable networking to get it to work again.

It's occurring to me now that this could be a problem with NetowrkManager rather than the kernel.

Please let me know how I can help debug. Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-generic 3.13.0.37.44
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jlquinn 2119 F.... pulseaudio
 /dev/snd/controlC1: jlquinn 2119 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Oct 11 13:16:47 2014
HibernationDevice: RESUME=UUID=650995f4-6763-4d42-966e-5c0689b207ea
InstallationDate: Installed on 2014-10-08 (3 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20A8S0SG00
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=95206ff2-9e2a-4ea3-b390-c5235863b247 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-37-generic N/A
 linux-backports-modules-3.13.0-37-generic N/A
 linux-firmware 1.127.7
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/02/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GRET40WW (1.17 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20A8S0SG00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGRET40WW(1.17):bd09/02/2014:svnLENOVO:pn20A8S0SG00:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A8S0SG00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20A8S0SG00
dmi.product.version: ThinkPad X1 Carbon 2nd
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Jerry Quinn, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.17

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]