compiz crashed with SIGSEGV in brw_upload_state()

[Norbert Mate]

I have a laptop and I am using it with dual monitor. I have set in the power management to do nothing when I close the lid. But when I close the lid the external monitor blanks out (maybe the xscreensaver starts). When I reopen the lid only the mouse can be seen (everything else is black) and it can be moved only within a rectangle. I thought this is the popup window that appears when I lock the screen. And it was. I entered my password and the system is back but the opened windows starts to "flash" like the system tries to redraws it then the crash report popup appeared. I still can use the system just I can't close the lid.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: compiz-core 1:0.9.7.2-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic-pae 3.2.13
Uname: Linux 3.2.0-21-generic-pae i686
.tmp.unity.support.test.0:

ApportVersion: 2.0-0ubuntu2
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Sun Apr 1 01:37:03 2012
DistUpgraded: 2012-03-31 16:32:05,832 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.1.8, 3.2.0-21-generic-pae, i686: installed
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: LENOVO HuronRiver Platform
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-21-generic-pae root=UUID=51032682-5719-410e-beef-ce93e62a1218 ro quiet splash vt.handoff=7
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
Title: compiz crashed with SIGSEGV in brw_upload_state()
UpgradeStatus: Upgraded to precise on 2012-03-31 (0 days ago)
UserGroups: adm admin cdrom debian-tor dialout lpadmin plugdev sambashare
dmi.bios.date: 05/12/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 44CN34WW
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Emerald Lake
dmi.board.vendor: LENOVO
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnLENOVO:bvr44CN34WW:bd05/12/2011:svnLENOVO:pnHuronRiverPlatform:pvrLenovoB570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
dmi.product.name: HuronRiver Platform
dmi.product.version: Lenovo B570
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.2-0ubuntu4
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Norbert Mate (mt-norbert)]

I have stopped the xscreensaver (there is no other screensaver started). Now compiz does not crash but if I close the lid the external monitor is still turned on but it's blank (black like when you set the screensaver to blank). The system does not enter to sleep or suspend mode because I have started a movie and I can still hear it.

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #947544, 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.