Mukil Elango, thank you for reporting this and helping make Ubuntu better. As per http://us.acer.com/ac/en/US/content/drivers an update to your computer's buggy and outdated BIOS is available (1.35). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, and the information above is provided, then please mark this report Status New. Thank you for your understanding. ** Tags added: bios-outdated-1.35 ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1390696 Title: Xorg freeze Status in xorg package in Ubuntu: Incomplete Bug description: My screen freezes and I couldn't do anything for a few seconds. Then the screen automatically goes blank. Then I have to do a hard reboot. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xorg 1:7.7+7ubuntu2 ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10 Uname: Linux 3.11.0-15-generic i686 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu8 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 CurrentDesktop: Unity Date: Sat Nov 8 15:38:49 2014 DistUpgraded: 2014-10-24 19:22:53,770 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GpuHangFrequency: Several times a week GpuHangReproducibility: Occurs more often under certain circumstances GpuHangStarted: Since before I upgraded GraphicsCard: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Device [1025:011f] Subsystem: Acer Incorporated [ALI] Device [1025:011f] InstallationDate: Installed on 2012-10-21 (747 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) MachineType: Acer TravelMate 5720 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=5d8c0515-a5a0-416c-b4f7-9a8c1e75df02 ro quiet splash SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to utopic on 2014-10-24 (14 days ago) dmi.bios.date: 04/15/2008 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: V1.34 dmi.board.name: Columbia dmi.board.vendor: Acer dmi.board.version: Rev dmi.chassis.asset.tag: None dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.34:bd04/15/2008:svnAcer:pnTravelMate5720:pvr0100:rvnAcer:rnColumbia:rvrRev:cvnAcer:ct10:cvrN/A: dmi.product.name: TravelMate 5720 dmi.product.version: 0100 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Sat Nov 8 07:46:59 2014 xserver.configfile: default xserver.errors: intel(0): sna_mode_check: invalid state found on pipe 0, disabling CRTC:3 xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 33140 vendor AUO xserver.version: 2:1.16.0-1ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1390696/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp