compiz crashed with SIGSEGV in sn_monitor_context_ref()

[Diego]

Binary package hint: compiz

no idea

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480
 edid-base64: AP///////wBEk0EAAAAAAAAPAQOAIRV4Ck3Ak1xRiCchUFQAAAABAQEBAQEBAQEBAQEBAQEB6hoAgFAgEDAVIEQAS88QAAAYAAAADwAIACoAAQAEADJKBBkBAAAA/gBRVUFOVEFESVNQTEFZAAAA/gBRRDE1VEwwNzIKICAgAIk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Tue Feb 1 17:19:37 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-02-01 14:45:28.987234
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard: Subsystem: Acer Incorporated [ALI] Device [1025:009f]
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire 5100
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=es_PY:es:en_GB:en
 LANG=es_PY.UTF-8
 LC_MESSAGES=es_PY.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=643a9060-2581-4da4-81c6-7c2e784a38ca ro quiet splash
Renderer: Hardware acceleration
SegvAnalysis:
 Segfault happened at: 0x304e56 <sn_monitor_context_ref+6>: addl $0x1,(%eax)
 PC (0x00304e56) ok
 source "$0x1" ok
 destination "(%eax)" (0x00400001) in non-writable VMA region: 0x0038d000-0x0046c000 r-xp /usr/lib/libstdc++.so.6.0.14
SegvReason: writing VMA /usr/lib/libstdc++.so.6.0.14
Signal: 11
SourcePackage: compiz
StacktraceTop:
 sn_monitor_context_ref () from /usr/lib/libstartup-notification-1.so.0
 ?? () from /usr/lib/libstartup-notification-1.so.0
 sn_list_foreach () from /usr/lib/libstartup-notification-1.so.0
 ?? () from /usr/lib/libstartup-notification-1.so.0
 sn_list_foreach () from /usr/lib/libstartup-notification-1.so.0
Title: compiz crashed with SIGSEGV in sn_monitor_context_ref()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:1541): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (gnome-settings-daemon:1516): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
 (nm-applet:1557): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
dmi.bios.date: 01/23/2007
dmi.bios.vendor: Acer
dmi.bios.version: V2.73
dmi.board.name: Navarro
dmi.board.vendor: Acer
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrV2.73:bd01/23/2007:svnAcer:pnAspire5100:pvrV2.73:rvnAcer:rnNavarro:rvrN/A:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5100
dmi.product.version: V2.73
dmi.sys.vendor: Acer
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.5+6ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.1-1ubuntu5
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.12.0-1ubuntu5.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu2

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #709380, 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.