The symptoms are consistent with a GPU hang, so please try to grab the /sys/kernel/debug/dri/0/i915_error_state after the event (and before rebooting).
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1176647 Title: Random Xorg freezes occuring hours after login Status in “xserver-xorg-video-intel” package in Ubuntu: New Bug description: When using the system for some time, at some point display freezes. The system seems to continue working as mplayer remains streaming internet radio and also the audio output works properly. During this lock-up the mouse can be moved but any click is ignored. Furthermore any attempt to switch to a TTY is ignored as well. Even worse the power button does not trigger a shutdown. Therefore I usually hard reset by pressing the power button for several seconds. I first witnessed this bug after upgrading to 13.04 (from 12.04). To make sure, I freshly installed Ubuntu, but unfortunately this did not help avoing the bug. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: xorg 1:7.7+1ubuntu4 ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8 Uname: Linux 3.8.0-19-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sun May 5 21:27:55 2013 DistUpgraded: Fresh install DistroCodename: raring DistroVariant: ubuntu DkmsStatus: virtualbox, 4.2.10, 3.8.0-19-generic, x86_64: installed ExtraDebuggingInterest: I just need to know a workaround GpuHangFrequency: Several times a day GpuHangReproducibility: Seems to happen randomly GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21da] InstallationDate: Installed on 2013-05-05 (0 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: LENOVO 4290W4H MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET51WW (1.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 4290W4H dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET51WW(1.21):bd08/02/2011:svnLENOVO:pn4290W4H:pvrThinkPadX220:rvnLENOVO:rn4290W4H:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4290W4H dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.43-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6 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 2:2.21.6-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 xserver.bootTime: Sun May 5 21:09:18 2013 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.13.3-0ubuntu6 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1176647/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp