compiz crashed with SIGSEGV in sn_monitor_context_ref()

[ernie]

Binary package hint: compiz

Compiz crashes at login. In the end I lose my desktop and receive a screen with only the wallpaper. I cannot start programs and the last time this happened I reinstalled the OS. After reinstall the Ubuntu logo, top left, produced a blank window. Clicking on it gives no list of programs sorted in categories as I expect it should I only land up in ../bin/ with list of all applications - this was after first install now I don't even get that far. Hope this helps.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu9
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
Architecture: i386
CrashCounter: 1
DRM.card0.DVI.D.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800
 edid-base64: AP///////wAGrxQ1AAAAAAERAQOAGhB4Cof+lFdPjCcnUFQAAAABAQEBAQEBAQEBAQEBAQEB6hoAgFAgEDAVIEQABaMQAAAYAAAADwAAAAAAAAAAAAAAAAAgAAAA/gBBVU8KICAgICAgICAgAAAA/gBCMTIxRVcwMyBWNSAKABg=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Thu Feb 3 08:13:27 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Subsystem: Acer Incorporated [ALI] Device [1025:011b]
   Subsystem: Acer Incorporated [ALI] Device [1025:011b]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110125)
MachineType: Acer, inc. TRAVELMATE 6292
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.37-12-generic root=UUID=d2900e99-9b8a-4b72-b787-4248de520463 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x96de56 <sn_monitor_context_ref+6>: addl $0x1,(%eax)
 PC (0x0096de56) ok
 source "$0x1" ok
 destination "(%eax)" (0x01000001) in non-writable VMA region: 0x00f64000-0x0106a000 r-xp /usr/lib/libgio-2.0.so.0.2793.0
SegvReason: writing VMA /usr/lib/libgio-2.0.so.0.2793.0
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:1474): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 07/27/2007
dmi.bios.vendor: Acer
dmi.bios.version: v1.3303
dmi.board.name: Victoria
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrv1.3303:bd07/27/2007:svnAcer,inc.:pnTRAVELMATE6292:pvrNotApplicable:rvnAcer,Inc.:rnVictoria:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: TRAVELMATE 6292
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.
version.compiz: compiz 1:0.9.2.1+glibmainloop4-0ubuntu9
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+6ubuntu8
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.13.901-2ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20100805+b96170a-0ubuntu1

[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.