compiz crashed with SIGSEGV in g_datalist_id_set_data_full()

[Robert Jordens]

crashes when changing screen layout between two monitors and a single monitor.

Screen 0: minimum 320 x 200, current 3200 x 1200, maximum 8192 x 8192
DisplayPort-0 connected 1920x1200+1280+0 (normal left inverted right x axis y axis) 519mm x 324mm
   1920x1200 60.0*+
   1600x1200 60.0
   1680x1050 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1
DVI-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 359mm x 287mm
   1280x1024 60.0*+
   1024x768 75.1 60.0
   800x600 75.0 60.3
   640x480 75.0 60.0
   720x400 70.1

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: libnux-2.0-0 2.0.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic x86_64
ApportVersion: 1.90-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Fri Jan 13 12:20:14 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fcb8021eb05 <g_datalist_id_set_data_full+341>: mov 0x0(%r13),%esi
 PC (0x7fcb8021eb05) ok
 source "0x0(%r13)" (0xaaaaaaaaaaaaaaa8) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 g_datalist_id_set_data_full () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 unity::PanelTray::~PanelTray() () from /usr/lib/compiz/libunityshell.so
 unity::PanelTray::~PanelTray() () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in g_datalist_id_set_data_full()
UpgradeStatus: Upgraded to precise on 2012-01-12 (1 days ago)
UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare video

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #916228, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.