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[madbiologist <1302574@xxxxxxxxxxxxxxxxxx>]

** Changed in: xorg (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1302574

Title:
  computer randomly freezes with screen coruption (Radeon HD 5750, IOMMU
  enabled)

Status in “xorg” package in Ubuntu:
  Fix Released

Bug description:
  my computer randomly freezes after i've updated from ubuntu 13.10 to
  14.04.

  it happens mostly when i've cold-booted between  ~5 minutes and 5
  hours runtime.

  no input seems to work any more, i only can press reset. apport
  doesn't recognize the crash it seems. once it happened while watching
  a video, the sound continued, but everything else was frozen.

  I didn't find something when doing "normal" work that always triggers
  the crash.

  But it crashes always, when i run qvdpautest:

  https://github.com/robertmassaioli/qvdpautest.git

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-20.42-generic 3.13.7
  Uname: Linux 3.13.0-20-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CompizPlugins: »/apps/compiz-1/general/screen0/options/active_plugins« wurde kein Wert zugewiesen
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Apr  4 14:55:53 2014
  DistUpgraded: 2014-01-27 02:54:01,828 DEBUG can't find apport
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.3.6, 3.13.0-19-generic, x86_64: installed
   virtualbox, 4.3.6, 3.13.0-20-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GpuHangFrequency: Several times a day
  GpuHangReproducibility: Yes, I can easily reproduce it
  GpuHangStarted: Since before I upgraded
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Juniper PRO [Radeon HD 5750] [1002:68be] (prog-if 00 [VGA controller])
     Subsystem: Hightech Information System Ltd. Device [1787:2287]
  MachineType: MSI MS-7693
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-20-generic root=UUID=ec58a69b-2d62-4a11-832d-1412107bbf76 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: Upgraded to trusty on 2014-01-27 (67 days ago)
  dmi.bios.date: 07/16/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V2.5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: 970A-G45 (MS-7693)
  dmi.board.vendor: MSI
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.5:bd07/16/2013:svnMSI:pnMS-7693:pvr1.0:rvnMSI:rn970A-G45(MS-7693):rvr1.0:cvnMSI:ct3:cvr1.0:
  dmi.product.name: MS-7693
  dmi.product.version: 1.0
  dmi.sys.vendor: MSI
  version.compiz: compiz 1:0.9.11+14.04.20140328-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Fri Apr  4 14:43:11 2014
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        ELECOM ELECOM LASER MOUSE MOUSE, id 8
   input        Generic USB Audio Device    KEYBOARD, id 9
   input        AT Translated Set 2 keyboard KEYBOARD, id 10
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.0-1ubuntu7
  xserver.video_driver: radeon

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