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[Bug 1002701] Re: Compiz hangs with 100% CPU usage in commit_transaction()

 

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** Changed in: compiz (Ubuntu)
       Status: New => Invalid

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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

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