Xorg crashed with SIGABRT in raise()

[databill]

Ubuntu 13.04
Uname 3.12.0-031200rc2-generic #201309231935 SMP Mon Sep 23 23:46:09 UTC 2013 i686 i686 i686 GNU/Linux
X200

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: xserver-xorg-core 2:1.13.3-0ubuntu6
Uname: Linux 3.12.0-031200rc2-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CrashCounter: 1
CurrentDmesg: [ 16.708023] br0: port 2(eth0) entered forwarding state
Date: Tue Oct 1 13:13:31 2013
DistUpgraded: 2013-09-21 06:32:35,367 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 tp-smapi, 0.41, 3.12.0-031200rc2-generic, i686: installed
 tp-smapi, 0.41, 3.8.0-30-generic, i686: installed
 virtualbox, 4.2.10: added
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:20e4]
   Subsystem: Lenovo Device [17aa:20e4]
InstallationDate: Installed on 2013-09-20 (10 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
LightdmGreeterLog: ** (lightdm-gtk-greeter:1828): WARNING **: Failed to load user image: Failed to open file '/home/julien/.face': No such file or directory
LightdmGreeterLogOld: ** (lightdm-gtk-greeter:2164): WARNING **: Failed to load user image: Failed to open file '/home/julien/.face': No such file or directory
MachineType: LENOVO 7458CZ8
MarkForUpload: True
ProcCmdline: /usr/bin/X :1 -core -auth /var/run/lightdm/root/:1 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-031200rc2-generic root=UUID=575022e0-3ec3-4d45-8a2c-03e88601e2d3 ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 OsAbort ()
 ?? ()
 FatalError ()
Title: Xorg crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to raring on 2013-09-20 (10 days ago)
UserGroups:

dmi.bios.date: 09/17/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET60WW (3.10 )
dmi.board.name: 7458CZ8
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:bvr6DET60WW(3.10):bd09/17/2009:svnLENOVO:pn7458CZ8:pvrThinkPadX200:rvnLENOVO:rn7458CZ8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7458CZ8
dmi.product.version: ThinkPad X200
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Tue Oct 1 15:53:00 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.video_driver: intel

[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 #1188123, 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.