I saw this for the first time last night. The symptons for me were the user switching not being visible, and the dmesg log about LightDM crashing with SIGABRT. Compiz kept running and was usable however. I'm flying today so I wont be able to investigate it until I get there.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/851345 Title: compiz crashes on i915 graphic module with GLX_EXT_texture_from_pixmap is missing Status in Unity: Invalid Status in “compiz” package in Ubuntu: Invalid Status in “lightdm” package in Ubuntu: Confirmed Status in “compiz” source package in Oneiric: Invalid Status in “lightdm” source package in Oneiric: Confirmed Status in “compiz” source package in p-series: Invalid Status in “lightdm” source package in p-series: Confirmed Bug description: Ubuntu 11.10: unity: 4.20.0-0ubuntu2 compiz: 1:0.9.6+bzr20110929-0ubuntu1 xorg: 1:7.6+7ubuntu7 linux-image-generic: 3.0.0.12.19 lightdm: 1.0.0-0ubuntu4 Since today’s updates compiz does not load any more. When i try to log into unity-3d it quickly blinks with the following error message: compiz --replace & Backend : gconf Integration : true Profile : unity Adding plugins Skipping upgrade com.canonical.unity.unity.01.upgrade Skipping upgrade com.canonical.unity.unity.02.upgrade Initializing core options...done Initializing bailer options...done Initializing detection options...done Initializing composite options...done Compiz (opengl) - Fatal: GLX_EXT_texture_from_pixmap is missing Compiz (opengl) - Fatal: Software rendering detected Compiz (bailer) - Info: Ensuring a shell for your session But my hardware was absolutely fine with 3d acceleration before today. lspci -v: 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device 20e4 Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at f0000000 (64-bit, non-prefetchable) [size=4M] Memory at d0000000 (64-bit, prefetchable) [size=256M] I/O ports at 1800 [size=8] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: compiz 1:0.9.5.94+bzr2803-0ubuntu5 ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4 Uname: Linux 3.0.0-11-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu1 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell] CompositorRunning: None Date: Thu Sep 15 23:00:56 2011 DistUpgraded: Log time: 2011-09-13 18:19:39.302686 DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: vboxhost, 4.1.2, 3.0.0-11-generic, x86_64: installed (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) virtualbox, 4.1.2, 3.0.0-11-generic, x86_64: installed (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) EcryptfsInUse: Yes GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:20e4] Subsystem: Lenovo Device [17aa:20e4] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302) MachineType: LENOVO 2774A29 PackageArchitecture: all ProcEnviron: LANGUAGE=de:en PATH=(custom, no user) LANG=de_CH.UTF-8 LC_MESSAGES=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic root=UUID=7cec099f-15dd-4509-ba10-033af14b1600 ro quiet splash pcie_aspm=force vt.handoff=7 SourcePackage: compiz UpgradeStatus: Upgraded to oneiric on 2011-09-13 (2 days ago) dmi.bios.date: 12/10/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6EET54WW (3.14 ) dmi.board.name: 2774A29 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:bvr6EET54WW(3.14):bd12/10/2010:svnLENOVO:pn2774A29:pvrThinkPadX301:rvnLENOVO:rn2774A29:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2774A29 dmi.product.version: ThinkPad X301 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.5.94+bzr2803-0ubuntu5 version.ia32-libs: ia32-libs 20090808ubuntu21 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 N/A 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/unity/+bug/851345/+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