Xorg crashed with SIGABRT in OsAbort()

[DonnieD]

Crashed after change proprietary Nvidia driver to Nouveau and rebooting system.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-core 2:1.14.2-0ubuntu9
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.12-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Fri Aug 9 09:48:50 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd Device [144d:c0b6]
   Subsystem: Samsung Electronics Co Ltd Device [144d:c0b6]
InstallationDate: Installed on 2013-08-08 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130808)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 300V3Z/300V4Z/300V5Z
MarkForUpload: True
ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-6-generic.efi.signed root=UUID=b8834f64-fda9-460d-aa3f-5aee5f1544be ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 OsAbort ()
 ?? ()
 FatalError ()
 ?? ()
 __libc_start_main (main=0x7f0f69bb0060, argc=9, ubp_av=0x7fffa7cfa7e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa7cfa7d8) at libc-start.c:260
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 09/25/2012
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 05FU
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 300V3Z/300V4Z/300V5Z
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr05FU:bd09/25/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn300V3Z/300V4Z/300V5Z:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300V3Z/300V4Z/300V5Z:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 300V3Z/300V4Z/300V5Z
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu8
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu8
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2-0ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.12-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8-0ubuntu3
xserver.bootTime: Fri Aug 9 09:49:54 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 12874
 vendor SEC
xserver.version: 2:1.14.2-0ubuntu9

[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.