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** Changed in: compiz (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1002701 Title: Compiz hangs with 100% CPU usage in commit_transaction() Status in compiz package in Ubuntu: Invalid Bug description: Sometimes (I think it's when I'm switching programs), I lose all responsiveness in my Unity desktop. I can move the mouse, but clicking does nothing. If I switch to a virtual terminal (tty1), I can run top and see that compiz is running at 100 or 101% cpu usage. On bug 885498 I was asked to run dstack and attach my output (hang.dstack). I attached output from several runs of dstack to that bug, but I figured it would be better to attach and check where compiz is really getting hung up. I installed libdee-1.0-1-dbg, attached to compiz with gdb, and I get a similar stack trace with 'bt' to the dstack output. Each time I run 'finish', it returns control until I reach #20 (commit_transaction). At this point, when I run 'finish', it waits for a long time (minutes) to return. Presumably something in commit_transaction should be returning to eventLoop() and allowing the UI thread to update? From compizstack.txt: #20 0x00007f0e96f0492b in commit_transaction (self=0x3711130, sender_name=0x3aa1d50 ":1.111", transaction=0xb478390) at dee-shared-model.c:1064 Similar to bug 815996 (but I'm not switching workspaces) and bug 773564 (but I have File Watcher disabled). ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: compiz 1:0.9.6+bzr20110929-0ubuntu6.1 ProcVersionSignature: Ubuntu 3.0.0-19.33-generic 3.0.27 Uname: Linux 3.0.0-19-generic x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,resize,obs,place,session,grid,gnomecompat,commands,regex,extrawm,move,imgpng,vpswitch,mousepoll,wall,snap,scale,text,scalefilter,scaleaddon,animation,workarounds,unitymtgrabhandles,expo,ezoom,unityshell] CompositorRunning: compiz Date: Tue May 22 00:13:11 2012 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:02aa] Subsystem: Dell Device [1028:02aa] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: Dell Inc. Inspiron 1545 PackageArchitecture: all ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-19-generic root=UUID=85d1e451-3c38-4c48-aa05-eeca017f1ad2 ro quiet splash vt.handoff=7 SourcePackage: compiz UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/13/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 0G848F dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd05/13/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0G848F:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1545 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6.1 version.ia32-libs: ia32-libs 20090808ubuntu26 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3.2 version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1 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 2:2.15.901-1ubuntu2.1 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/compiz/+bug/1002701/+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