Xorg crashed with SIGABRT in raise()

[Peter]

When started,i entered bios and set cpu virtual technology enabled.then it reported that problem.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: xserver-xorg-core 2:1.13.3-0ubuntu13
ProcVersionSignature: Ubuntu 3.10.0-2.9-generic 3.10.0
Uname: Linux 3.10.0-2-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.10.2-0ubuntu3
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:
 [ 36.949645] type=1400 audit(1372914502.517:32): apparmor="STATUS" operation="profile_replace" parent=1099 profile="unconfined" name="/usr/sbin/mysqld" pid=1160 comm="apparmor_parser"
 [ 40.804152] init: plymouth-stop pre-start process (1387) terminated with status 1
 [ 52.549044] hda-intel 0000:00:1b.0: Unstable LPIB (65512 >= 32768); disabling LPIB delay counting
Date: Thu Jul 4 13:03:45 2013
DistUpgraded: 2013-07-01 00:14:46,603 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3975]
 NVIDIA Corporation GF119M [GeForce GT 520M] [10de:1050] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:397f]
InstallationDate: Installed on 2012-09-08 (298 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
MachineType: LENOVO IdeaPad Z470
MarkForUpload: True
ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-2-generic root=UUID=923C579D3C577AE5 loop=/hostname/disks/root.disk 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 saucy on 2013-06-30 (3 days ago)
UserGroups:

dmi.bios.date: 05/05/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 4ACN33WW
dmi.board.name: KL6
dmi.board.vendor: LENOVO
dmi.board.version: Rev 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr4ACN33WW:bd05/05/2011:svnLENOVO:pnIdeaPadZ470:pvrRev1.0:rvnLENOVO:rnKL6:rvrRev1.0:cvnLENOVO:ct10:cvrRev1.0:
dmi.product.name: IdeaPad Z470
dmi.product.version: Rev 1.0
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.libdrm2: libdrm2 2.4.45-2ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu13
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 2:2.21.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8-0ubuntu1
xserver.bootTime: Thu Jul 4 13:08:23 2013
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
 NOUVEAU(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu13
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.