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[Launchpad Bug Tracker <983696@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/983696

Title:
  kernel BUG at
  /build/buildd/linux-3.0.0/drivers/gpu/drm/i915/i915_gem.c:3336!

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  I was to connect external LCD to a  Thinkpad X220T on the VGA port.
  The system was frozen and both internal and external LCD have a blank screen.
  The Cap lock LED on the keyboard was not functional.
  I have to force a poweroff to regain control of the computer.

  What you expected to happen:
  The external LCD displayed screen correctly

  What happened instead
  The computer crashed and both screens were blank

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: xorg 1:7.6+7ubuntu7.1
  ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
  Uname: Linux 3.0.0-17-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,vpswitch,move,place,unitymtgrabhandles,mousepoll,gnomecompat,wall,grid,resize,session,snap,regex,animation,expo,fade,ezoom,scale,workarounds,unityshell]
  CompositorRunning: compiz
  Date: Tue Apr 17 14:02:03 2012
  DistUpgraded: Fresh install
  DistroCodename: oneiric
  DistroVariant: ubuntu
  DkmsStatus:
   tp-smapi, 0.41, 3.0.0-16-generic, x86_64: installed
   tp-smapi, 0.41, 3.0.0-17-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GpuHangFrequency: This is the first time
  GpuHangReproducibility: Seems to happen randomly
  GpuHangStarted: Today
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21db]
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: LENOVO 429637U
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-17-generic root=UUID=1183cf9c-0d9c-4d5b-87fc-dc6bb5bb1c7d ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/01/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET56WW (1.26 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 429637U
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET56WW(1.26):bd12/01/2011:svnLENOVO:pn429637U:pvrThinkPadX220Tablet:rvnLENOVO:rn429637U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 429637U
  dmi.product.version: ThinkPad X220 Tablet
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6.1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3.2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3.2
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

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