*** This bug is a duplicate of bug 1510970 ***
    https://bugs.launchpad.net/bugs/1510970

Look like same symptoms of bug #1510970

Disable window animations in Compiz reduces the frequency of the
crashes. Use compizconfig-settings-manager for this tweak (sudo apt-get
install compizconfig-settings-manager)

I didn't run into this issue for several days after upgrading to kernel 4.3 
from http://kernel.ubuntu.com/~kernel-ppa/mainline/
Please join me in testing this.

** This bug has been marked a duplicate of bug 1510970
   Intel driver crashes on Ubuntu 15.10

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https://bugs.launchpad.net/bugs/1512097

Title:
  Random crashes of X11

Status in xorg package in Ubuntu:
  New

Bug description:
  This seems to happen when opening a new window. Just when the new
  window is going to open my screen goes black and I see the last lines
  of the boot process like I switched to the first virtual terminal. I
  wait a second or two and then I'm back at the login screen.  Xorg
  crash log attached. The report 1509846 seems to be very similar to the
  behavior of what I'm seeing. I've tried turning off the animations in
  compiz now and will see how it goes.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.19.1-0ubuntu4
  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: Sun Nov  1 07:48:09 2015
  DistUpgraded: 2015-10-23 05:02:51,863 DEBUG enabling apt cron job
  DistroCodename: wily
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 5.0.4, 3.19.0-31-generic, x86_64: installed
   virtualbox, 5.0.4, 4.2.0-16-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller 
[8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: CLEVO/KAPOK Computer Device [1558:0655]
  MachineType: System76, Inc. Gazelle Professional
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic 
root=UUID=575ca223-36fe-4b42-b415-9a49c600d894 ro acpi_backlight=vendor 
acpi_os_name=Linux acpi_osi= i915.disable_power_well=0 quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to wily on 2015-10-23 (9 days ago)
  dmi.bios.date: 06/13/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Gazelle Professional
  dmi.board.vendor: System76, Inc.
  dmi.board.version: gazp9
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: System76, Inc.
  dmi.chassis.version: gazp9
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd06/13/2013:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp9:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp9:cvnSystem76,Inc.:ct9:cvrgazp9:
  dmi.product.name: Gazelle Professional
  dmi.product.version: gazp9
  dmi.sys.vendor: System76, Inc.
  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
  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: Sun Nov  1 07:41:49 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                 933 
   vendor                                     LGD
  xserver.version: 2:1.17.2-1ubuntu9

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