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[Bug 1387488] [NEW] periodic compiz freezes with no logs or error messages, requires me to kill compiz


Public bug reported:

To start, unfortunately, I have no idea how to reproduce this, nor how
to trigger it.  All I know is that occasionally I will go away and come
back hours later to discover that compiz is locked up tight.

What I see when this happens is the lock screen (screen locks when the
screensaver engages or screen blanks).  I can still get mouse cursor
movements which is enough to trigger the monitor to turn back on, BUT
the password entry box is FULL of dots and while I can move the pointer
around, clicks are not registered anywhere, nor is any keypress.

When this happens, I can restore the session by sshing into the system,
and killing the compiz process which I always find consuming between 96
and 99% CPU and hung.  Once I kill compiz, it reloads and I am able to
get back into the system and continue on.

This happens at least once a week, it seems and I have no idea what
triggers it as the system is always left idle when it occurs.

System is an Alienware M15x with an nVidia GT240M card using the
proprietary nVidia drivers.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: compiz 1:
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic
Uname: Linux 3.13.0-36-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  331.38  Wed Jan  8 19:32:30 PST 2014
 GCC version:  gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
ApportVersion: 2.14.1-0ubuntu3.5
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: Wed Oct 29 22:30:39 2014
DistUpgraded: 2014-04-20 14:24:15,941 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
 NVIDIA Corporation GT216M [GeForce GT 240M] [10de:0a34] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:02a2]
InstallationDate: Installed on 2012-03-15 (958 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120307)
MachineType: Alienware M15x
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic root=UUID=e7eedf5d-5aad-4230-b123-47162b1acea6 ro
SourcePackage: compiz
UpgradeStatus: Upgraded to trusty on 2014-04-20 (192 days ago)
dmi.bios.date: 08/24/2010
dmi.bios.vendor: Alienware
dmi.bios.version: A08
dmi.board.vendor: Alienware
dmi.board.version: A08
dmi.chassis.type: 8
dmi.chassis.vendor: Alienware
dmi.chassis.version: A08
dmi.modalias: dmi:bvnAlienware:bvrA08:bd08/24/2010:svnAlienware:pnM15x:pvrA08:rvnAlienware:rn:rvrA08:cvnAlienware:ct8:cvrA08:
dmi.product.name: M15x
dmi.product.version: A08
dmi.sys.vendor: Alienware
version.compiz: compiz 1:
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.2
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Mon Oct  6 14:54:57 2014
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2.1

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug compiz-0.9 trusty ubuntu

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  periodic compiz freezes with no logs or error messages, requires me to
  kill compiz

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