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[Pwnicorn <pwnicorndev@xxxxxxxxx>]

This happens for me sometimes when I switch on/off plugins in CCSM.
It does never appear in everyday use though.

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https://bugs.launchpad.net/bugs/934441

Title:
  compiz crashed with SIGSEGV in type_check_is_value_type_U()

Status in Unity:
  Triaged
Status in Unity 5.0 series:
  Triaged
Status in Unity 6.0 series:
  Triaged
Status in “unity” package in Ubuntu:
  Triaged

Bug description:
  clicked on a browser window near a workspace border in one case.
  Clicked on the Unity lens in another.

  haven't quite isolated what kinds of actions cause this, but I did not
  see this behavior prior to today.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: compiz-core 1:0.9.7.0~bzr2995-0ubuntu4
  ProcVersionSignature: Ubuntu 3.2.0-16.25-generic 3.2.6
  Uname: Linux 3.2.0-16-generic x86_64
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  290.10  Wed Nov 16 17:39:29 PST 2011
   GCC version:  gcc version 4.6.2 (Ubuntu/Linaro 4.6.2-14ubuntu1)
  .tmp.unity.support.test.0:
   
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,resize,regex,move,imgpng,compiztoolbox,animation,place,snap,expo,vpswitch,grid,mousepoll,gnomecompat,workarounds,wall,session,fade,ezoom,scale,unityshell]
  CompositorRunning: compiz
  CrashCounter: 1
  Date: Fri Feb 17 14:34:57 2012
  DistUpgraded: Log time: 2012-01-31 10:39:59.114340
  DistroCodename: precise
  DistroVariant: ubuntu
  ExecutablePath: /usr/bin/compiz
  GraphicsCard:
   NVIDIA Corporation GF100 [GeForce GTX 480] [10de:06c0] (rev a3) (prog-if 00 [VGA controller])
     Subsystem: eVga.com. Corp. Device [3842:1480]
  JockeyStatus:
   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
   xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
  MachineType: OEM OEM
  ProcCmdline: compiz
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-16-generic root=UUID=da6dc9d4-310c-45d3-b564-b8bfdcf158dc ro quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x7fbff42e1324 <g_type_check_is_value_type+260>:	mov    (%rax),%rax
   PC (0x7fbff42e1324) ok
   source "(%rax)" (0xc01062530150702) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: compiz
  StacktraceTop:
   g_type_check_is_value_type () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_value_type_compatible () 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_type_check_is_value_type()
  UpgradeStatus: Upgraded to precise on 2012-02-01 (16 days ago)
  UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare
  dmi.bios.date: 04/20/2011
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: 141-BL-E757
  dmi.board.vendor: EVGA
  dmi.board.version: Tylersburg
  dmi.chassis.type: 3
  dmi.chassis.vendor: OEM
  dmi.chassis.version: OEM
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd04/20/2011:svnOEM:pnOEM:pvrOEM:rvnEVGA:rn141-BL-E757:rvrTylersburg:cvnOEM:ct3:cvrOEM:
  dmi.product.name: OEM
  dmi.product.version: OEM
  dmi.sys.vendor: OEM
  version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu4
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.30-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu5
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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