Public bug reported:
For the last two days (since Monday 21st May 2012) my machine (a Lenovo
U300s) has been snowcrashing six or seven times a day. By this I mean
that the screen (or screens) are filled with coloured moving static.
When the machine is snowcrashed, it does not respond to ssh, and sounds
that were playing are stopped; as far as I can tell, the machine is
genuinely crashed and *not* still working but with broken video.
Recovering from the snowcrash requires powercycling the machine.
I am running a custom kernel provided by cking to fix a suspend issue,
but the issue also happens under the regular Ubuntu kernel.
I have seen this crash happen after hours of usage, or within minutes of
logging on. I have also seen it happen at the lightdm login screen
before I am even logged on. It happens both when the laptop is using
solely its own screen and also when the laptop is plugged into a monitor
via HDMI.
kern.log shows nothing of interest. At RAOF's suggestion I tried echo
0xe>/sys/module/drm/parameters/debug but there was still no interesting
information in kern.log after a crash and powercycle. Xorg.0.log.old
also contains nothing relevant.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-u300acpifix1-generic 3.2.14
Uname: Linux 3.2.0-24.37-u300acpifix1-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
CheckboxSubmission: 4d186c1dd89d3ba4cb89f5ee55713686
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Wed May 23 11:17:50 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:3975]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111211)
MachineType: LENOVO 1080
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24.37-u300acpifix1-generic
root=UUID=1897a7e0-a3e7-4d65-811e-c8ffeacf0435 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
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
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 precise regression-update ubuntu
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https://bugs.launchpad.net/bugs/1003333
Title:
Ubuntu snowcrashes frequently but with no obvious cause
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