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[Apport retracing service <1281189@xxxxxxxxxxxxxxxxxx>]

StacktraceTop:
 generate (list=0x2430000, condition=0x0, i=0, this=0x64d77034) at ../../../../src/glsl/lower_variable_index_to_cond_assign.cpp:226
 linear_sequence (list=0x2430000, end=0, begin=0, this=0xffffffff9b288fcc) at ../../../../src/glsl/lower_variable_index_to_cond_assign.cpp:269
 (anonymous namespace)::switch_generator::generate (this=0xffffffff9b288fcc, begin=0, end=0, list=0x2430000) at ../../../../src/glsl/lower_variable_index_to_cond_assign.cpp:326
 ?? ()

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https://bugs.launchpad.net/bugs/1281189

Title:
  compiz crashed with SIGSEGV in generate()

Status in “unity” package in Ubuntu:
  New

Bug description:
  Running in low graphics mode after latest update to compiz and unity.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity 7.1.2+14.04.20140214.1-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
  Uname: Linux 3.13.0-8-generic x86_64
  ApportVersion: 2.13.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Feb 17 17:02:50 2014
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2014-01-21 (26 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140121)
  ProcCmdline: compiz
  SegvAnalysis:
   Segfault happened at: 0x7f0fb830bc24 <__memmove_sse2+244>:	movzbl (%rdx),%ecx
   PC (0x7f0fb830bc24) ok
   source "(%rdx)" (0xffffffff44e4a3d3) not located in a known VMA region (needed readable region)!
   destination "%ecx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
   ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
   compiz::opengl::bindTexImageGLX(ServerGrabInterface*, unsigned long, unsigned long, boost::function<bool (unsigned long)> const&, boost::function<void (unsigned long)> const&, boost::function<void ()> const&, compiz::opengl::_PixmapSource) () from /usr/lib/compiz/libopengl.so
   TfpTexture::bindTexImage(unsigned long const&) () from /usr/lib/compiz/libopengl.so
   TfpTexture::bindPixmapToTexture(unsigned long, int, int, int, compiz::opengl::_PixmapSource) () from /usr/lib/compiz/libopengl.so
  Title: compiz crashed with SIGSEGV in compiz::opengl::bindTexImageGLX()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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