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["Thomas A. F. Thorne" <1477566@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1438210 ***
    https://bugs.launchpad.net/bugs/1438210

I have just mentioned this bug in Bug #1477631, which manifested itself
in a similar way a couple of hours after I saw and reported this bug.

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https://bugs.launchpad.net/bugs/1477566

Title:
  compiz crashed with SIGSEGV in g_closure_invoke() seemingly without
  user interaction

Status in compiz package in Ubuntu:
  New

Bug description:
  The error reported in the bug report does resemble that of 
  ​Bug #727041 unity-window-decorator crashed with SIGSEGV in g_closure_invoke()
  Fix Released (34 comments) last updated 2014-10-11 view this bug
  Bug  #724874 unity-window-decorator crashed with SIGSEGV in g_cclosure_marshal_VOID__OBJECT()
  Fix Released (41 comments) last updated 2012-02-16 view this bug
  Bug #726432 compiz crashed with SIGSEGV in g_type_check_instance_cast()
  Confirmed (10 comments) last updated 2012-07-15 view this bug
  Bug  #726897 unity-window-decorator crashed with SIGSEGV in g_closure_invoke()
  Invalid (6 comments) last updated 2011-04-10 view this bug

  However all of those seem to state they needed some user interaction.
  I was using my keyboard and mouse through Synergy to control a laptop.
  I should not have been exorcising any of the onbox GUI when this crash
  seemed to occur.  I have a second crash report listed under /var/crash
  /_usr_lib_unity-settings-daemon_unity-settings-daemon.1000.crash but
  when I tried to report it I was instructed to update nautilus-data and
  see if it still occurs.  This confused me as the Software Updater did
  not list this as needing an update but when I do `apt-get upgrade -s`
  I can see that it is listed.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: compiz-core 1:0.9.11.3+14.04.20150313-0ubuntu1
  Uname: Linux 4.1.0-040100rc8-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.11
  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: Thu Jul 23 13:41:33 2015
  Disassembly: => 0x0:	Cannot access memory at address 0x0
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExecutablePath: /usr/bin/compiz
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000]
  InstallationDate: Installed on 2015-03-12 (132 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Gigabyte Technology Co., Ltd. H81M-DS2V
  ProcCmdline: compiz
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.1.0-040100rc8-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash crashkernel=384M-:128M vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x0:	Cannot access memory at address 0x0
   PC (0x00000000) not located in a known VMA region (needed executable region)!
  SegvReason: executing NULL VMA
  Signal: 11
  SourcePackage: compiz
  StacktraceTop:
   ?? ()
   g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: compiz crashed with SIGSEGV in g_closure_invoke()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin mock plugdev sambashare sudo
  dmi.bios.date: 06/19/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H81M-DS2V
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF5:bd06/19/2014:svnGigabyteTechnologyCo.,Ltd.:pnH81M-DS2V:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-DS2V:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: H81M-DS2V
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
  version.ia32-libs: ia32-libs 20090808ubuntu36
  version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri N/A
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Thu Jul 23 13:41:50 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               26053 
   vendor                                     NEC
  xserver.version: 2:1.16.0-1ubuntu1.2~trusty2

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