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[pazuzuthewise <pazuzuthewise@xxxxxxxxx>]

Public bug reported:

Binary package hint: compiz

Using XFCE, I have just switched from compiz back to Xfwm4 by way of compiz-fusion-icon, when apport detected a crash.
The desktop switched correctly to Xfwm4.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4+bzr20110415-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
CrashCounter: 1
Date: Sun May 15 03:02:13 2011
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
InstallationMedia_: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
ProcCmdline: compiz --replace --sm-disable --ignore-desktop-hints ccp
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
SegvAnalysis:
 Segfault happened at: 0xb718a33d <pthread_mutex_lock+29>:	mov    0xc(%esi),%edi
 PC (0xb718a33d) ok
 source "0xc(%esi)" (0x04da0381) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
 Glib::Source::unreference() const () from /usr/lib/libglibmm-2.4.so.1
 PrivateScreen::~PrivateScreen() ()
 PrivateScreen::~PrivateScreen() ()
Title: compiz crashed with SIGSEGV in pthread_mutex_lock()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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


** Tags: apport-crash i386 natty ubuntu

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https://bugs.launchpad.net/bugs/782839

Title:
  compiz crashed with SIGSEGV in pthread_mutex_lock()