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[Will Shackleton <w.shackleton@xxxxxxxxx>]

I've just updated to A07 - I'll let you know if I experience any more
freezes.

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https://bugs.launchpad.net/bugs/1323389

Title:
  Xorg freezes when resuming laptop with external monitors

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  When resuming my laptop from sleep via the keyboard, occasionally X
  will freeze up - this is usually associated with one of my monitors
  not displaying output. I can't reach a terminal with Ctrl-Alt-F2 and I
  have to open the laptop and reboot with Alt-PrtScr-(REISUB) (hard
  reboot) - the USB keyboard won't work in this situation.

  This only happens occasionally and will usually happen if I wake the
  laptop before turning the screens back on.

  There are other cases that can also trigger X freezes but I'm not sure
  if they are related (eg. unplugging screens).

  The following is commonly seen in dmesg during normal behaviour:
  [drm:intel_dp_aux_native_write] *ERROR* too many retries, giving up
  [drm:intel_dp_start_link_train] *ERROR* failed to enable link training

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  .tmp.unity.support.test.0:
   
  .tmp.unity.support.test.1:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Mon May 26 19:46:18 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   bbswitch, 0.8, 3.13.0-24-generic, x86_64: installed
   nvidia-331-updates, 331.38, 3.13.0-24-generic, x86_64: installed
   virtualbox, 4.3.10, 3.13.0-24-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GpuHangFrequency: Several times a week
  GpuHangReproducibility: Yes, I can easily reproduce it
  GpuHangStarted: Immediately after installing this version of Ubuntu
  GraphicsCard:
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:060d]
     Subsystem: Dell Device [1028:060d]
  InstallationDate: Installed on 2014-05-24 (2 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Dell Precision M3800
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/06/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: Dell Precision M3800
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A03
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/06/2014:svnDellInc.:pnDellPrecisionM3800:pvrA03:rvnDellInc.:rnDellPrecisionM3800:rvrA03:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Dell Precision M3800
  dmi.product.version: A03
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  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: Mon May 26 13:33:32 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               41122 
   vendor                                     DEL
  xserver.version: 2:1.15.1-0ubuntu2

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