[display]: gnome-control-center crashed with SIGSEGV in on_screen_changed()

[Malte Pannemann]

I turn off a VGA Monitor with the system settings and when i removed the vga-cable this crash happend.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: gnome-control-center 1:3.3.5-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 1.92-0ubuntu1
Architecture: amd64
Date: Tue Feb 21 13:49:13 2012
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
ProcCmdline: gnome-control-center --overview
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f255be346fc: mov (%rax),%rdi
 PC (0x7f255be346fc) ok
 source "(%rax)" (0xaaaaaaaaaaaaaaaa) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-control-center
StacktraceTop:
 ?? () from /usr/lib/control-center-1/panels/libdisplay.so
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: [display]: gnome-control-center crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: Upgraded to precise on 2012-02-18 (2 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.1-0ubuntu2
 deja-dup 21.2-0ubuntu4
 gnome-bluetooth 3.2.2-0ubuntu1
 indicator-datetime 0.3.90-0ubuntu1

[Apport retracing service (apport)]

StacktraceTop:
 on_screen_changed (scr=0x7f256d21b320, data=<optimized out>) at cc-display-panel.c:243
 closure_invoke_notifiers (notify_type=2, closure=0x7f256d22dfd0) at /build/buildd/glib2.0-2.31.18/./gobject/gclosure.c:282
 g_closure_invoke (closure=0x7f256d22dfd0, return_value=0x0, n_param_values=1, param_values=0x7f256d2674c0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.31.18/./gobject/gclosure.c:773
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=<optimized out>, emission_return=0x0, instance_and_params=0x7f256d2674c0) at /build/buildd/glib2.0-2.31.18/./gobject/gsignal.c:3307
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.31.18/./gobject/gsignal.c:3063