compiz crashed with SIGSEGV in pthread_mutex_lock()

[Noel J. Bergman]

Binary package hint: compiz

apport generated

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4+bzr20110411-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 270.30 Fri Feb 25 14:34:55 PST 2011
 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu1)
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Tue Apr 12 14:33:28 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 270.30, 2.6.38-8-generic, x86_64: installed
 nvidia-current, 270.30, 2.6.38-7-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 nVidia Corporation G84M [Quadro FX 570M] [10de:040c] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo ThinkPad T61p [17aa:20d9]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100601)
InstallationMedia_: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100601)
JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
MachineType: LENOVO 64577WU
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=ac4ccc70-26e3-44dd-a6cf-715d1226eeb4 ro quiet splash
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x7f471b0f1394 <pthread_mutex_lock+4>: mov 0x10(%rdi),%esi
 PC (0x7f471b0f1394) ok
 source "0x10(%rdi)" (0x17802820036001e) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 pthread_mutex_lock () from /lib/x86_64-linux-gnu/libpthread.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 PrivateScreen::~PrivateScreen() ()
 PrivateScreen::~PrivateScreen() ()
 CompScreen::~CompScreen() ()
Title: compiz crashed with SIGSEGV in pthread_mutex_lock()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 04/08/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC7WW (2.27 )
dmi.board.name: 64577WU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7LETC7WW(2.27):bd04/08/2010:svnLENOVO:pn64577WU:pvrThinkPadT61p:rvnLENOVO:rn64577WU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 64577WU
dmi.product.version: ThinkPad T61p
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.4+bzr20110411-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu12
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[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 #755828, 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.