*** This bug is a duplicate of bug 851982 ***
    https://bugs.launchpad.net/bugs/851982

** This bug is no longer a duplicate of bug 916770
   compiz crashed with SIGSEGV in CompWindow::id() from getPaintMask() 
[compizminimizedwindowhandler.h] from unity::UnityWindow::glPaint()
** This bug has been marked a duplicate of bug 851982
   compiz crashed with SIGSEGV in CompWindow::id()

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https://bugs.launchpad.net/bugs/945092

Title:
  compiz crashed with SIGSEGV in CompWindow::id()

Status in “unity” package in Ubuntu:
  New

Bug description:
  Closed a program that had gone white after being minimized.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: unity 5.4.0-0ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
  Uname: Linux 3.2.0-17-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.94-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Fri Mar  2 13:56:06 2012
  ExecutablePath: /usr/bin/compiz
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  ProcCmdline: compiz
  SegvAnalysis:
   Segfault happened at: 0x7fd0bca01f97 <_ZN10CompWindow2idEv+7>:       mov    
0x20(%rax),%rax
   PC (0x7fd0bca01f97) ok
   source "0x20(%rax)" (0x00000020) not located in a known VMA region (needed 
readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   CompWindow::id() () from /usr/lib/libcompiz_core.so.ABI-20120216
   unity::UnityWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, 
CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so
   GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion 
const&, unsigned int) () from /usr/lib/compiz/libopengl.so
   PrivateGLScreen::paintOutputRegion(GLMatrix const&, CompRegion const&, 
CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so
   GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, 
CompRegion const&, CompOutput*, unsigned int) () from 
/usr/lib/compiz/libopengl.so
  Title: compiz crashed with SIGSEGV in CompWindow::id()
  UpgradeStatus: Upgraded to precise on 2012-03-01 (1 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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