compiz crashed with SIGSEGV in sigc::trackable::callback_list()

[John M.K.]

Binary package hint: unity

I was trying todays ubuntu daily live (i386) built, from a usb stick. I had my laptop connected to a tv-monitor before booting up.

Compiz crashed when unintentionally the vga cable connecting the tv-monitor with my laptop disconnected (the system had already fully booted and both my laptop screen and the tv-monitor where showing the desktop...).

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Fri Apr 8 21:00:25 2011
ExecutablePath: /usr/bin/compiz
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110408)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xf181ca <_ZNK4sigc9trackable13callback_listEv+26>: mov (%esi),%eax
 PC (0x00f181ca) ok
 source "(%esi)" (0x00000031) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 sigc::trackable::callback_list() const () from /usr/lib/libsigc-2.0.so.0
 sigc::trackable::remove_destroy_notify_callback(void*) const () from /usr/lib/libsigc-2.0.so.0
 sigc::internal::typed_slot_rep<sigc::bound_mem_functor1<void, PlacesHomeView, PlacesTile*> >::destroy(void*) () from /usr/lib/compiz/libunityshell.so
 PanelMenuView::OnPlaceViewShown(_GVariant*, PanelMenuView*) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in sigc::trackable::callback_list()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:4500): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (<unknown>:4485): libindicator-WARNING **: Shortcut Group does not have key 'TargetEnvironment' falling back to deprecated use of 'OnlyShowIn' and 'NotShowIn'.
 (<unknown>:4793): libindicator-WARNING **: Shortcut Group does not have key 'TargetEnvironment' falling back to deprecated use of 'OnlyShowIn' and 'NotShowIn'.

[Apport retracing service (apport)]

StacktraceTop:
 sigc::trackable::callback_list (this=0x31) at ../../sigc++/trackable.cc:74
 sigc::trackable::remove_destroy_notify_callback (this=0x31, data=0x9e71508) at ../../sigc++/trackable.cc:61
 operator() (data=0x9e71508) at /usr/include/sigc++-2.0/sigc++/functors/slot_base.h:166
 execute_ (data=0x9e71508) at /usr/include/sigc++-2.0/sigc++/visit_each.h:88
 operator()<sigc::trackable> (data=0x9e71508) at /usr/include/sigc++-2.0/sigc++/visit_each.h:100

[Neil J. Patel (njpatel)]

In Oneiric.