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[Matthias Gehre <1177775@xxxxxxxxxxxxxxxxxx>]

The bug reoccured with the latest mainline I tested (3.11.0-031100rc7-generic).
It seems to mainly occur when moving windows and specifically when moving windows between two displays. But that may be coincidence.

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https://bugs.launchpad.net/bugs/1177775

Title:
  [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  About twice or three times a work day, X freezes, dmesg shows

  [ 9877.990203] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
  [ 9877.990209] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
  [ 9880.009147] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
  [ 9880.009316] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
  [ 9880.009319] [drm:i915_reset] *ERROR* Failed to reset chip.

  Restarting X11 does not work, I have to restart the laptop to start
  X11 again.

  This only started after upgrading from quantal to raring.

  I can do advanced debugging if required.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-19-generic 3.8.0-19.30
  ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC29', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA:
   country DE:
   	(2400 - 2483 @ 40), (N/A, 20)
   	(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
   	(5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
   	(5470 - 5725 @ 40), (N/A, 26), DFS
  Date: Wed May  8 14:44:48 2013
  InstallationDate: Installed on 2013-02-26 (71 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: LENOVO 4349WJK
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=/dev/mapper/vg0-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-04-19 (19 days ago)
  dmi.bios.date: 10/26/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6MET81WW (1.41 )
  dmi.board.name: 4349WJK
  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:bvr6MET81WW(1.41):bd10/26/2010:svnLENOVO:pn4349WJK:pvrThinkPadT510:rvnLENOVO:rn4349WJK:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4349WJK
  dmi.product.version: ThinkPad T510
  dmi.sys.vendor: LENOVO

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