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[Bug 1516822] [NEW] Xorg crashes with segmentation fault

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Public bug reported:

1) Release information:

$ lsb_release -rd
Description:	Ubuntu 15.10
Release:	15.10

2) Package version information

15:26:38-stephen~$ apt-cache policy xserver-xorg
xserver-xorg:
  Installed: 1:7.7+7ubuntu4
  Candidate: 1:7.7+7ubuntu4
  Version table:
 *** 1:7.7+7ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status
15:27:08-stephen~$ apt-cache policy xserver-xorg-core
xserver-xorg-core:
  Installed: 2:1.17.2-1ubuntu9
  Candidate: 2:1.17.2-1ubuntu9
  Version table:
 *** 2:1.17.2-1ubuntu9 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status
15:27:11-stephen~$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.99.917+git20150808-0ubuntu4
  Candidate: 2:2.99.917+git20150808-0ubuntu4
  Version table:
 *** 2:2.99.917+git20150808-0ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status

3) What you expected to happen

Xorg never crashes due to segfaults.

4) What happened instead

Xorg crashes due to segfaults.

I have recently seen an increase in unexpected X crashes while using my
machine, sending me back to the login screen and losing the state of my
open applications.

I use a ThinkPad T540p with Intel graphics and Ubuntu 15.10 (upgraded
from 15.04). I use Xrandr to configure and position my external and
internal displays, including the use of the --panning/--scale/--dpi
options to help my external display behave more like my internal HiDPI
display (in case that's relevant to this problem).

I heavily use PhpStorm, a JetBrains IDE from their IDEA family built in
Java. The last two times this crash has happened to me (Friday and
today), I was interacting with the IDE at the time. I saved a copy of
Xorg.0.log.old both times and will attempt to attach both to this report
(their backtraces differ a bit). During the first crash I believe I was
simply interacting with the UI in some way; During the second crash, I
had just clicked the window decoration's "X" button to close PhpStorm.

Please let me know if there's something I can do to help diagnose the
crash further. In the meantime, I've installed the -dbg packages for
xorg-core and xorg-video-intel in the hopes that future backtraces might
be more useful. If I see this crash again, I'll post the log here in the
comments.

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: Mon Nov 16 15:21:27 2015
DistUpgraded: 2015-11-03 14:44:11,845 DEBUG enabling apt cron job
DistroCodename: wily
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 5.0.4, 3.19.0-31-generic, x86_64: installed
 vboxhost, 5.0.4, 4.2.0-16-generic, x86_64: installed
 vboxhost, 5.0.4, 4.2.0-18-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:2210]
InstallationDate: Installed on 2014-06-24 (510 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
MachineType: LENOVO 20BECTO1WW
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=022a17a0-1dc9-4b5c-ad86-912739c13a73 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to wily on 2015-11-03 (13 days ago)
dmi.bios.date: 03/19/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GMET62WW (2.10 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BECTO1WW
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:bvrGMET62WW(2.10):bd03/19/2014:svnLENOVO:pn20BECTO1WW:pvrThinkPadT540p:rvnLENOVO:rn20BECTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20BECTO1WW
dmi.product.version: ThinkPad T540p
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
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: Mon Nov 16 14:37:29 2015
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                               38562 
 vendor                                     MEI
xserver.version: 2:1.17.2-1ubuntu9

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 ubuntu wily

** Attachment added: "Log from the first crash described in the description"
   https://bugs.launchpad.net/bugs/1516822/+attachment/4520297/+files/XorgPstormCrash.log

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1516822

Title:
  Xorg crashes with segmentation fault

Status in xorg package in Ubuntu:
  New

Bug description:
  1) Release information:

  $ lsb_release -rd
  Description:	Ubuntu 15.10
  Release:	15.10

  2) Package version information

  15:26:38-stephen~$ apt-cache policy xserver-xorg
  xserver-xorg:
    Installed: 1:7.7+7ubuntu4
    Candidate: 1:7.7+7ubuntu4
    Version table:
   *** 1:7.7+7ubuntu4 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status
  15:27:08-stephen~$ apt-cache policy xserver-xorg-core
  xserver-xorg-core:
    Installed: 2:1.17.2-1ubuntu9
    Candidate: 2:1.17.2-1ubuntu9
    Version table:
   *** 2:1.17.2-1ubuntu9 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status
  15:27:11-stephen~$ apt-cache policy xserver-xorg-video-intel
  xserver-xorg-video-intel:
    Installed: 2:2.99.917+git20150808-0ubuntu4
    Candidate: 2:2.99.917+git20150808-0ubuntu4
    Version table:
   *** 2:2.99.917+git20150808-0ubuntu4 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
          100 /var/lib/dpkg/status

  3) What you expected to happen

  Xorg never crashes due to segfaults.

  4) What happened instead

  Xorg crashes due to segfaults.

  I have recently seen an increase in unexpected X crashes while using
  my machine, sending me back to the login screen and losing the state
  of my open applications.

  I use a ThinkPad T540p with Intel graphics and Ubuntu 15.10 (upgraded
  from 15.04). I use Xrandr to configure and position my external and
  internal displays, including the use of the --panning/--scale/--dpi
  options to help my external display behave more like my internal HiDPI
  display (in case that's relevant to this problem).

  I heavily use PhpStorm, a JetBrains IDE from their IDEA family built
  in Java. The last two times this crash has happened to me (Friday and
  today), I was interacting with the IDE at the time. I saved a copy of
  Xorg.0.log.old both times and will attempt to attach both to this
  report (their backtraces differ a bit). During the first crash I
  believe I was simply interacting with the UI in some way; During the
  second crash, I had just clicked the window decoration's "X" button to
  close PhpStorm.

  Please let me know if there's something I can do to help diagnose the
  crash further. In the meantime, I've installed the -dbg packages for
  xorg-core and xorg-video-intel in the hopes that future backtraces
  might be more useful. If I see this crash again, I'll post the log
  here in the comments.

  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: Mon Nov 16 15:21:27 2015
  DistUpgraded: 2015-11-03 14:44:11,845 DEBUG enabling apt cron job
  DistroCodename: wily
  DistroVariant: ubuntu
  DkmsStatus:
   vboxhost, 5.0.4, 3.19.0-31-generic, x86_64: installed
   vboxhost, 5.0.4, 4.2.0-16-generic, x86_64: installed
   vboxhost, 5.0.4, 4.2.0-18-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:2210]
  InstallationDate: Installed on 2014-06-24 (510 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  MachineType: LENOVO 20BECTO1WW
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=022a17a0-1dc9-4b5c-ad86-912739c13a73 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to wily on 2015-11-03 (13 days ago)
  dmi.bios.date: 03/19/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GMET62WW (2.10 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BECTO1WW
  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:bvrGMET62WW(2.10):bd03/19/2014:svnLENOVO:pn20BECTO1WW:pvrThinkPadT540p:rvnLENOVO:rn20BECTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20BECTO1WW
  dmi.product.version: ThinkPad T540p
  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
  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: Mon Nov 16 14:37:29 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               38562 
   vendor                                     MEI
  xserver.version: 2:1.17.2-1ubuntu9

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