8086:0116 [Lenovo IdeaPad U300s] Machine locks up a few times a day

[Stuart Langridge]

My machine is locking up a few times a day. These lockups seem to be graphics-related -- they often occur when opening a new tab in Chromium or a new window or Unity indicator menu shows on the screen -- but are not universally so. Sometimes the machine will lock up of its own accord when no-one is using it at all.

When locked up, the machine is unresponsive to keypresses and mouse movements; I cannot, for example, switch to a virtual console. It will not answer ssh connections (the network going down is why I think it might be a kernel problem rather than X). It *does* respond to SysRq+REISUB. However, SysRq+1t does not leave any trace in kern.log after a reboot.

I have run memtest86 overnight and it shows no errors.

This started happening under raring; I have upgraded to saucy in the hope that it would fix the problem and it has not. It occurs using both Xorg and Xmir.

I am unable to trigger the problem at will.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-7-generic 3.11.0-7.14
ProcVersionSignature: Ubuntu 3.11.0-7.14-generic 3.11.1
Uname: Linux 3.11.0-7-generic x86_64
ApportVersion: 2.12.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: aquarius 3679 F.... pulseaudio
 /dev/snd/controlC0: aquarius 3679 F.... pulseaudio
CheckboxSubmission: 4d186c1dd89d3ba4cb89f5ee55713686
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Wed Sep 18 10:19:36 2013
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=2a997b66-19bc-46c5-b10c-2d09ecf514eb
InstallationDate: Installed on 2011-12-11 (646 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111211)
MachineType: LENOVO 1080
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=1897a7e0-a3e7-4d65-811e-c8ffeacf0435 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-7-generic N/A
 linux-backports-modules-3.11.0-7-generic N/A
 linux-firmware 1.114
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: Upgraded to saucy on 2013-09-05 (12 days ago)
dmi.bios.date: 11/21/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 56CN38WW
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: U300s
dmi.board.vendor: LENOVO
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad U300s
dmi.modalias: dmi:bvnLENOVO:bvr56CN38WW:bd11/21/2011:svnLENOVO:pn1080:pvrLenovoIdeaPadU300s:rvnLENOVO:rnU300s:rvr1.0:cvnLENOVO:ct10:cvrLenovoIdeaPadU300s:
dmi.product.name: 1080
dmi.product.version: Lenovo IdeaPad U300s
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.12 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc1-saucy/

[Joseph Salisbury (jsalisbury)]

If this issue still happens in v3.12-rc1, we can bisect between Raring and the last release that did not exhibit this bug.

[Stuart Langridge (sil)]

I've now been successfully running upstream kernel for quite a few days and haven't had a single lockup, which suggests that the problem is not exhibited by the upstream kernel.

What do I do next to help resolve this bug? I've set the tags as the bot message suggested above.

[Joseph Salisbury (jsalisbury)]

The Saucy kernel in -proposed has now been rebased to upstream 3.11.2. If this is fixed upstream, the fix should have made it's way in to the Saucy kernel with this rebase. Can you test the latest -proposed kernel to see if it resolves this bug:

https://launchpad.net/ubuntu/+source/linux/3.11.0-9.16/+build/5055306

Both the linux-image and linux-image-extra .deb packages need to be installed from that page.

Another option would be to just enable the -proposed repository:
 https://wiki.ubuntu.com/Testing/EnableProposed

[penalvch (penalvch)]

Stuart Langridge, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please just make a comment to this.

[Joseph Salisbury (jsalisbury)]

This bug was nominated against a series that is no longer supported, ie saucy. The bug task representing the saucy nomination is being closed as Won't Fix.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Launchpad Janitor (janitor)]

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