Xorg crashed with SIGABRT in raise()

[Marko]

Seems to be something about graphic drivers, as I consistently get 'graphic drivers not found' (or similar text) error when this event occurs. And it does not occur all the time, but in about 40% of all boots.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-core 2:1.13.0-0ubuntu6.1
ProcVersionSignature: Ubuntu 3.5.0-22.34-generic 3.5.7.2
Uname: Linux 3.5.0-22-generic x86_64
.tmp.unity.support.test.1:

ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CrashCounter: 1
Date: Mon Jan 21 13:30:29 2013
DistUpgraded: 2012-10-22 14:03:50,693 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0504]
 NVIDIA Corporation GF108 [GeForce GT 540M] [10de:0df4] (rev ff) (prog-if ff)
InstallationDate: Installed on 2012-09-13 (130 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MachineType: Acer Aspire 5755G
MarkForUpload: True
ProcCmdline: /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-22-generic root=UUID=36c6849a-bcfa-4a5d-9f05-c3011a6453ea ro acpi_osi=Linux quiet splash acpi_backlight=vendor
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 raise () from /lib/x86_64-linux-gnu/libc.so.6
 abort () from /lib/x86_64-linux-gnu/libc.so.6
 OsAbort ()
 ?? ()
 FatalError ()
Title: Xorg crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to quantal on 2012-10-22 (91 days ago)
UserGroups:

dmi.bios.date: 03/16/2012
dmi.bios.vendor: Acer
dmi.bios.version: V1.20
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JV51_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.20
dmi.modalias: dmi:bvnAcer:bvrV1.20:bd03/16/2012:svnAcer:pnAspire5755G:pvrV1.20:rvnAcer:rnJV51_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.20:
dmi.product.name: Aspire 5755G
dmi.product.version: V1.20
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

[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 #1065288, 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.