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[Launchpad Bug Tracker <1522727@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg-server (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1522727

Title:
  X.org crashes intermittently, randomly

Status in xorg-server package in Ubuntu:
  Confirmed

Bug description:
  Since upgrading to Ubuntu 15.10, X.org crashes intermittently. The
  screen will suddenly turn black, and after a few seconds, the LightDM
  login screen appears. All unsaved work is lost of course.

  A clean install of 15.10 did not help, the problem persists.

  It happens absolutely randomly. I haven't been able to figure out any
  pattern related to time or specific user interaction that would cause
  this, except that I believe the crash is always triggered by some kind
  of input device action, i.e. mouse click or key press. The system
  won't crash if I don't actively do any work.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  BootLog:
   Scanning for Btrfs filesystems
   fsck from util-linux 2.26.2
   /dev/sda1: clean, 365974/2501856 files, 2841542/9999755 blocks
  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: Fri Dec  4 08:50:28 2015
  DistUpgraded: Fresh install
  DistroCodename: wily
  DistroVariant: ubuntu
  DkmsStatus:
   acpi-call, 1.1.0, 4.2.0-18-generic, x86_64: installed
   acpi-call, 1.1.0, 4.2.0-19-generic, x86_64: installed
   vboxhost, 5.0.8, 4.2.0-18-generic, x86_64: installed
   vboxhost, 5.0.8, 4.2.0-19-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21fb]
  InstallationDate: Installed on 2015-10-25 (39 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 2356AB2
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic root=UUID=794b7585-5080-4bd4-a642-688538787fea ro quiet splash vt.handoff=7
  SourcePackage: xorg-server
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/12/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ET63WW (2.05 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2356AB2
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ET63WW(2.05):bd11/12/2012:svnLENOVO:pn2356AB2:pvrThinkPadT430s:rvnLENOVO:rn2356AB2:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2356AB2
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.64-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
  xserver.bootTime: Fri Dec  4 08:49:37 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                8510 
   vendor                                     AUO
  xserver.version: 2:1.17.2-1ubuntu9.1

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