Xorg crashed with SIGABRT in OsAbort()

[WoolF]

Don't know why xorg-server just stops working now and then.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.14.5-1ubuntu2
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic i686
.tmp.unity.support.test.1:

ApportVersion: 2.13.2-0ubuntu2
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
Date: Thu Jan 30 13:24:48 2014
DistUpgraded: 2014-01-30 01:51:10,006 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation G96M [GeForce GT 130M] [10de:0652] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3882]
InstallationDate: Installed on 2014-01-20 (10 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
MachineType: LENOVO 20017
ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=343f9dd3-169d-43e8-b278-fcd007f162c3 ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 OsAbort ()
 ?? ()
 FatalError ()
 ?? ()
 __libc_start_main (main=0xb751a2b0, argc=9, argv=0xbfd897e4, init=0xb76a2730 <__libc_csu_init>, fini=0xb76a27a0 <__libc_csu_fini>, rtld_fini=0xb74dd0f0 <_dl_fini>, stack_end=0xbfd897dc) at libc-start.c:287
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: Upgraded to trusty on 2014-01-29 (0 days ago)
UserGroups:

dmi.bios.date: 03/15/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 15CN35WW(V2.08)
dmi.board.name: KIWB1
dmi.board.vendor: LENOVO
dmi.board.version: REFERENCE
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr15CN35WW(V2.08):bd03/15/2010:svnLENOVO:pn20017:pvrLenovoIdeaPadY550:rvnLENOVO:rnKIWB1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: 20017
dmi.product.version: Lenovo IdeaPad Y550
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.libdrm2: libdrm2 2.4.52+git20140121.46d451c9-0ubuntu0sarvatt~saucy
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~git20140128.10dc994e-0ubuntu0sarvatt~saucy
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~git20140128.10dc994e-0ubuntu0sarvatt~saucy
version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.907+git20140125.294180b3-0ubuntu0sarvatt~saucy
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu1
xserver.bootTime: Thu Jan 30 14:26:06 2014
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.14.5-1ubuntu2

[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.