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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1384342 ***
    https://bugs.launchpad.net/bugs/1384342

** This bug has been marked a duplicate of bug 1384342
   kernel messages intel_crtc_wait_for_pending_flips correlate to compiz hang

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https://bugs.launchpad.net/bugs/1409046

Title:
  intel_crtc_wait_for_pending_flips correlate to GUI hang

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  About every 2 - 4 days, the UI hangs and I need to power cycle the
  system in order to return to usability. The mouse cursor can be moved,
  but only on the current monitor.

  This has only happened since upgrading to 14.10. Hardware is a Lenovo
  W540.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-28-generic 3.16.0-28.38
  ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  jeremiah   4202 F.... pulseaudio
   /dev/snd/controlC2:  jeremiah   4202 F.... pulseaudio
   /dev/snd/controlC1:  jeremiah   4202 F.... pulseaudio
   /dev/snd/controlC0:  jeremiah   4202 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Jan  9 07:36:39 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-08-07 (155 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 20BGCTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic.efi.signed root=UUID=7ce22631-1a2f-45e4-872c-3cf524945a3e ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-28-generic N/A
   linux-backports-modules-3.16.0-28-generic  N/A
   linux-firmware                             1.138.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-12-18 (21 days ago)
  dmi.bios.date: 06/20/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GNET65WW (2.13 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BGCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50512 Std
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGNET65WW(2.13):bd06/20/2014:svnLENOVO:pn20BGCTO1WW:pvrThinkPadW540:rvnLENOVO:rn20BGCTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20BGCTO1WW
  dmi.product.version: ThinkPad W540
  dmi.sys.vendor: LENOVO

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