Xorg crashed with SIGABRT in OsAbort() continuously when browsing internet with firefox

This bug report is similar to my other bug report, when gpu lockups in intel driver module for xorg.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-core 2:1.13.0-0ubuntu6.1
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Fri Apr 5 16:56:34 2013
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0106] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0649]
 NVIDIA Corporation Device [10de:1140] (rev ff) (prog-if ff)
InstallationDate: Installed on 2013-02-18 (46 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Acer Aspire E1-531G
MarkForUpload: True
ProcCmdline: /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcCwd: /etc/X11
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=63262429-0c63-48cc-a4b6-d3907e268362 ro quiet splash
RetraceOutdatedPackages: outdated debug symbol package for libc-bin: package version 2.15-0ubuntu20 dbgsym version 2.15-0ubuntu20.1
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 OsAbort () at ../../os/utils.c:1266
 AbortServer () at ../../os/log.c:655
 FatalError (f=f@entry=0x7f885a7c4e42 "no screens found") at ../../os/log.c:793
 main (argc=9, argv=0x7fff2addd9f8, envp=<optimized out>) at ../../dix/main.c:207
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 10/15/2012
dmi.bios.vendor: Acer
dmi.bios.version: V2.07
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: EA50_HC_HR
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.07
dmi.modalias: dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireE1-531G:pvrV2.07:rvnAcer:rnEA50_HC_HR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07:
dmi.product.name: Aspire E1-531G
dmi.product.version: V2.07
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3