unity-panel-service crashed with SIGSEGV in gdk_window_new()

[Shelby Cain]

Unity running inside an x2go/NX session. Was attempting to click on the session icon in the top right when this crash occurred and subsequently a failure of gnome-session killed my entire session.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.22.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: zfs zcommon znvpair zavl zunicode
.tmp.unity.support.test.1:

ApportVersion: 1.23-0ubuntu2
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashCounter: 1
Date: Wed Oct 5 10:09:57 2011
DistUpgraded: Log time: 2011-08-01 14:02:41.639440
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 spl, 0.6.0.33, 3.0.0-12-generic, i686: installed
 zfs, 0.6.0.33, 3.0.0-12-generic, i686: installed
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard:
 VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
   Subsystem: VMware SVGA II Adapter [15ad:0405]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
MachineType: VMware, Inc. VMware Virtual Platform
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=/dev/mapper/hostname-root ro vmalloc=786M
SegvAnalysis:
 Segfault happened at: 0xc34ee6 <gdk_window_new+870>: mov 0x10(%eax),%eax
 PC (0x00c34ee6) ok
 source "0x10(%eax)" (0x00000010) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 gdk_window_new () from /usr/lib/libgdk-3.so.0
 ?? () from /usr/lib/libido3-0.1.so.0
 g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () 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
Title: unity-panel-service crashed with SIGSEGV in gdk_window_new()
UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code 1: Error: no composite extension
UpgradeStatus: Upgraded to oneiric on 2011-09-20 (15 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 09/22/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd09/22/2009:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1
xinput:
 "pointer" id=0 [XPointer]
 "keyboard" id=1 [XKeyboard]

[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 #867649, 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.