I suspect this may be another duplicate of the bug 80568, fixed (worked- around) by this commit:
commit c4fd0c9052dd391d6f2e9bb8e6da209dfc7ef35b Author: Kenneth Graunke <kenn...@whitecape.org> Date: Sat Jan 17 23:21:15 2015 -0800 i965: Work around mysterious Gen4 GPU hangs with minimal state changes. Gen4 hardware appears to GPU hang frequently when using Chromium, and also when running 'glmark2 -b ideas'. Most of the error states contain 3DPRIMITIVE commands in quick succession, with very few state packets between them - usually VERTEX_BUFFERS/ELEMENTS and CONSTANT_BUFFER. I trimmed an apitrace of the glmark2 hang down to two draw calls with a glUniformMatrix4fv call between the two. Either draw by itself works fine, but together, they hang the GPU. Removing the glUniform call makes the hangs disappear. In the hardware state, this translates to removing the CONSTANT_BUFFER packet between the two 3DPRIMITIVE packets. Flushing before emitting CONSTANT_BUFFER packets also appears to make the hangs disappear. I observed a slowdown in glxgears by doing it all the time, so I've chosen to only do it when BRW_NEW_BATCH and BRW_NEW_PSP are unset (i.e. we haven't done a CS_URB_STATE change or already flushed the whole pipeline). I'd much rather understand the problem, but at this point, I don't see how we'd ever be able to track it down further. We have no real tools, and the hardware people moved on years ago. I've analyzed 20+ error states and read every scrap of documentation I could find. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80568 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85367 Signed-off-by: Kenneth Graunke <kenn...@whitecape.org> Acked-by: Matt Turner <matts...@gmail.com> Cc: "10.4 10.3" <mesa-sta...@lists.freedesktop.org> It's in git, and backports are in Mesa 10.4.x for x >= 3. Please try upgrading to >=10.4.3. If it's resolved by such an upgrade, please mark as a duplicate of bug 80568. -- 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/1413710 Title: Xorg crash - Fullscreen causing crash Status in X.Org X server: Confirmed Status in xorg package in Ubuntu: Incomplete Bug description: I was listening to this YouTube video: http://www.infinitelooper.com/?v=-tJYN-eG1zk&p=n When I decided to make it full screen, but it didn't want to go, so I very quickly double-clicked on it twice, and then the entire screen went black. And no matter what I did, it go away. Although I could still hear the music from the video. As I couldn't do anything really about it I had to hold down my power button and force it to shutdown. And when it started up the screen was fine. It is a laptop so I don't think that the monitor just turned off or something. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xorg 1:7.7+7ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2 Uname: Linux 3.16.0-29-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu8.1 Architecture: amd64 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: Thu Jan 22 19:26:26 2015 DistUpgraded: 2014-12-13 16:39:34,851 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:5002] InstallationDate: Installed on 2014-12-06 (47 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 62742SG ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-29-generic root=UUID=3883b8c8-34cb-4ec2-8834-fe85bbd10f52 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: Upgraded to utopic on 2014-12-13 (40 days ago) dmi.bios.date: 11/15/2012 dmi.bios.vendor: LENOVO dmi.bios.version: H5ET69WW (1.12 ) dmi.board.asset.tag: Not Available dmi.board.name: 62742SG dmi.board.vendor: LENOVO dmi.board.version: Win8 Pro DPK IPG dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrH5ET69WW(1.12):bd11/15/2012:svnLENOVO:pn62742SG:pvrLenovoB590:rvnLENOVO:rn62742SG:rvrWin8ProDPKIPG:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 62742SG dmi.product.version: Lenovo B590 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2 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~exp1ubuntu4.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Thu Jan 22 19:19:28 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 827 vendor LGD xserver.version: 2:1.16.0-1ubuntu1.2 To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1413710/+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