*** This bug is a duplicate of bug 1157649 *** https://bugs.launchpad.net/bugs/1157649
@markusj, My apologies - as I explained to Chris, I'm very, very new to the bugtracking process, and to the linux kernel in general. I've removed the tag to Docky from my original bug, and have marked my bug as a duplicate of #1157649. I've also just installed the 3.5.0-25 kernel with "sudo apt-get install linux-image-3.5.0-25-generic linux- headers-3.5.0-25-generic". I've just tested a bit with the 3.5.0-25 kernel and the GPU crashes seem to have stopped!!!!!!!! I have so many questions at this point, e.g.: 1) Was the 3.2.0-40 kernel version on my Ubuntu 12.04 LTS machine there because all the software for that version of Ubuntu has not been deemed compatible with it? Why was a newer version not used? 2) Now that I've changed my kernel, will I be receiving automatic software updates OK? 3) What is the best way to keep up to date on the fix for this issue? This is all very cool, I want to help out as much as possible. -- 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/1159255 Title: GPU freeze possibly caused by transparency effects? sandybridge-m-gt2 GPU lockup IPEHR: 0x41e80000 IPEHR: 0x0b140001 Status in “xserver-xorg-video-intel” package in Ubuntu: Fix Released Bug description: The issue appeared since a few days and might be related to transparency/overlay effects used by gnome shell (or firefox for hw- accelerated rendering). The screen freezes except of mouse pointer movement, but the system still reacts on keystrokes. Recent related updates: 03/19: linux-generic-lts-quantal:amd64 3.5.0.25.32 -> 3.5.0.26.33 (including image und headers) 03/08: xserver-common:amd64 2:1.11.4-0ubuntu10.11 -> 2:1.11.4-0ubuntu10.12 (common, xephyr, xorg-core) Most propably the last kernel update caused this problem ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.3 ProcVersionSignature: Ubuntu 3.5.0-26.42~precise1-generic 3.5.7.6 Uname: Linux 3.5.0-26-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 Chipset: sandybridge-m-gt2+ CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Mar 23 23:14:26 2013 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DuplicateSignature: [sandybridge-m-gt2+] GPU lockup IPEHR: 0x41e80000 IPEHR: 0x0b140001 Ubuntu 12.04 ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py ExtraDebuggingInterest: Yes, GpuHangFrequency: Several times a week GpuHangReproducibility: Occurs more often under certain circumstances GpuHangStarted: Within the last week or two GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21d1] NVIDIA Corporation GF119 [Quadro NVS 4200M] [10de:1057] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:21d1] InterpreterPath: /usr/bin/python2.7 MachineType: LENOVO 4242PT2 MarkForUpload: True ProcCmdline: /usr/bin/python /usr/share/apport/apport-gpu-error-intel.py ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/vgluks-root ro quiet noplymouth pcie_aspm=force acpi_irq_balance i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.powersave=1 drm.vblankoffdelay=1 bootchart=disable RelatedPackageVersions: xserver-xorg 1:7.6+12ubuntu2 libdrm2 2.4.39-0ubuntu0.1 xserver-xorg-video-intel 2:2.17.0-1ubuntu4.3 SourcePackage: xserver-xorg-video-intel Title: [sandybridge-m-gt2+] GPU lockup IPEHR: 0x41e80000 IPEHR: 0x0b140001 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 12/05/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 8AET61WW (1.41 ) dmi.board.asset.tag: Not Available dmi.board.name: 4242PT2 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:bvr8AET61WW(1.41):bd12/05/2012:svnLENOVO:pn4242PT2:pvrThinkPadT520:rvnLENOVO:rn4242PT2:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4242PT2 dmi.product.version: ThinkPad T520 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.7.12-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu36 version.libdrm2: libdrm2 2.4.39-0ubuntu0.1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.4 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.12 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1159255/+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