Also, I seem to have a Radeon card, because when the bug occurs, I also get the message "failed to load driver: r600".
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1302270 Title: [regression] Poor performance with recent update with i965: libGL error: failed to open drm device: Permission denied Status in Compiz: Confirmed Status in Unity: Confirmed Status in systemd package in Ubuntu: Confirmed Status in xorg package in Ubuntu: Confirmed Bug description: I rebooted into up to date trusty and noticed Unity was incredibly slow. I hadn't rebooted in a while, so I'm not sure what package caused the issue, though I'm guessing it is mesa (I saw i965 pci ids were ifdef'd in the Launchpad diff, but I didn't look super closely). ~/.xsession-errors has this to say: libGL error: failed to open drm device: Permission denied libGL error: failed to load driver: i965 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8 Uname: Linux 3.13.0-22-generic x86_64 .tmp.unity.support.test.1: ApportVersion: 2.14-0ubuntu1 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Thu Apr 3 20:08:18 2014 DistUpgraded: 2013-11-04 08:48:34,282 DEBUG enabling apt cron job DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:215a] InstallationDate: Installed on 2011-06-28 (1010 days ago) InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110425.2) Lsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 5129CTO ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-22-generic root=UUID=88689ad2-74b5-442c-9290-8ae60b63e16b ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to trusty on 2013-11-04 (150 days ago) dmi.bios.date: 02/24/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 6QET64WW (1.34 ) dmi.board.name: 5129CTO 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:bvr6QET64WW(1.34):bd02/24/2011:svnLENOVO:pn5129CTO:pvrThinkPadX201s:rvnLENOVO:rn5129CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 5129CTO dmi.product.version: ThinkPad X201s dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.11+14.04.20140328-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Thu Apr 3 19:38:17 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 16404 vendor LEN xserver.version: 2:1.15.0-1ubuntu7 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1302270/+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