Not a GPU hang as I first thought, but a bug in the synaptics (touchpad, input) driver.
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Invalid -- 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/883699 Title: after some alt-tabbing the mouse stops moving Status in “xserver-xorg-video-intel” package in Ubuntu: Invalid Bug description: dont know exactly what the circumstances are but i had this happen several times a two different machines. if you alt tab while something else happens (dont know, perhaps mouse buttons), the mouse simply stops moving. keyboard keeps working fine, just no more clicks and moves from the mouse ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xserver-xorg 1:7.6+7ubuntu7 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic i686 .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu3 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,vpswitch,snap,move,place,grid,resize,mousepoll,regex,gnomecompat,session,imgpng,wall,unitymtgrabhandles,animation,fade,expo,ezoom,workarounds,scale,unityshell] CompositorRunning: compiz Date: Sun Oct 30 02:37:03 2011 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:830f] Subsystem: ASUSTeK Computer Inc. Device [1043:830f] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901) MachineType: ASUSTeK Computer INC. 1000 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=ebbb59b1-7b76-401f-9a10-f0a74d5ada47 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/11/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1003 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 1000 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: 0x00000000 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTek Computer INC. dmi.chassis.version: x.x dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1003:bd06/11/2009:svnASUSTeKComputerINC.:pn1000:pvrx.x:rvnASUSTeKComputerINC.:rn1000:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x: dmi.product.name: 1000 dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/883699/+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