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[Apport retracing service <860089@xxxxxxxxxxxxxxxxxx>]

StacktraceTop:
 ?? () from /tmp/tmpQgPhHQ/usr/lib/control-center-1/panels/libdisplay.so
 g_cclosure_marshal_VOID__VOID (closure=0x21240b88, return_value=0x0, n_param_values=1, param_values=0x211bcea8, invocation_hint=0xbfb80450, marshal_data=0x0) at /build/buildd/glib2.0-2.29.92/./gobject/gmarshal.c:85
 g_closure_invoke (closure=0x21240b88, return_value=0x0, n_param_values=1, param_values=0x211bcea8, invocation_hint=0xbfb80450) at /build/buildd/glib2.0-2.29.92/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=0x21239c98, detail=0, instance=0x21186718, emission_return=0x0, instance_and_params=0x211bcea8) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3272
 g_signal_emit_valist (instance=0x21186718, signal_id=266, detail=0, var_args=0xbfb805fc "\214\235P") at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3003

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https://bugs.launchpad.net/bugs/860089

Title:
  gnome-control-center crashed with SIGSEGV in
  g_cclosure_marshal_VOID__VOID() called via gdk_display_get_event ()

Status in “gnome-control-center” package in Ubuntu:
  Triaged

Bug description:
  Was experimenting with external monitor on arrandale laptop.
  Produced this crash as follows:
  1.  In Display Properties, Turn off mirroring, place external monitor above LVDS.  Apply and confirm.
  2.  In Display Properties, Turn off VGA1.  Apply.
  3.  Crash notice appears.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: gnome-control-center 1:3.1.92-0ubuntu6
  ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  NonfreeKernelModules: wl
  ApportVersion: 1.23-0ubuntu1
  Architecture: i386
  Date: Mon Sep 26 14:44:17 2011
  ExecutablePath: /usr/bin/gnome-control-center
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110921.2)
  ProcCmdline: gnome-control-center display
  SegvAnalysis:
   Segfault happened at: 0x1287830d:	mov    (%eax),%eax
   PC (0x1287830d) ok
   source "(%eax)" (0xaaaaaaaa) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-control-center
  StacktraceTop:
   ?? () from /usr/lib/control-center-1/panels/libdisplay.so
   g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
   g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
  Title: gnome-control-center crashed with SIGSEGV in g_cclosure_marshal_VOID__VOID()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  usr_lib_gnome-control-center:
   deja-dup           20.0-0ubuntu1
   gnome-bluetooth    3.2.0-0ubuntu1
   indicator-datetime 0.2.95-0ubuntu1

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