Xorg crashed with SIGABRT in raise()

[joshiss]

after updating 13.04 on 12th feb 2013 it gave an error at boot and halted booting

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: xserver-xorg-core 2:1.13.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-6.11-generic 3.8.0-rc7
Uname: Linux 3.8.0-6-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.8-0ubuntu4
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CrashCounter: 1
Date: Wed Feb 13 10:15:35 2013
DistUpgraded: 2013-01-25 11:06:33,429 DEBUG The following packages are marked for removal: libcogl9 libclutter-gst-1.0-0 linux-headers-3.5.0-21-generic linux-image-3.5.0-21-generic linux-headers-3.5.0-19-generic linux-image-3.5.0-19-generic libmx-common libmx-bin python3.2 laptop-mode-tools linux-headers-3.5.0-22-generic linux-headers-3.5.0-17-generic linux-image-extra-3.5.0-18-generic libpython3.2 libmx-1.0-2 linux-headers-3.5.0-21 linux-headers-3.5.0-22 linux-headers-3.5.0-19 libgrail5 python3.2-minimal libkms1 linux-image-extra-3.5.0-21-generic python-magic linux-image-3.5.0-18-generic linux-image-extra-3.5.0-19-generic
DistroCodename: raring
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 12) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1423]
InstallationDate: Installed on 2012-03-24 (325 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120324)
MachineType: Hewlett-Packard HP ProBook 4420s
MarkForUpload: True
ProcCmdline: /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-6-generic root=UUID=8a691df1-94b5-42e2-9bc9-58195c3ca7ac 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 2013-01-25 (19 days ago)
UserGroups:

dmi.bios.date: 06/29/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68AHH Ver. F.09
dmi.board.name: 1423
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 53.1D
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68AHHVer.F.09:bd06/29/2010:svnHewlett-Packard:pnHPProBook4420s:pvr:rvnHewlett-Packard:rn1423:rvrKBCVersion53.1D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4420s
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.9~daily13.02.08-0ubuntu1
version.libdrm2: libdrm2 2.4.42-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.2-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu2
xserver.bootTime: Wed Feb 13 11:42:55 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.2-0ubuntu2
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 #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.