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[Bug 995118] [NEW] Compiz CPU load is 100% when system idling and screen blank


Public bug reported:

Compiz CPU load is about 8% when system is idling and the screen is on.
About 30 seconds after the screen goes blank the CPU load increases to
100% and remain at that level until keyboard or mouse activity enables
the screen. At that time the CPU load returns to 8%. The system gets
very hot and the fan is running at maximum speed when the screen is

Problem came after upgrade from 11.10 to 12.04. No problem if using
Ubuntu 2D mode.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: fglrx wl
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,resize,gnomecompat,wall,imgpng,unitymtgrabhandles,vpswitch,regex,snap,compiztoolbox,animation,grid,move,place,workarounds,expo,fade,session,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Sat May  5 17:22:39 2012
DistroCodename: precise
DistroVariant: ubuntu
 bcmwl,, 3.0.0-19-generic-pae, i686: installed
 bcmwl,, 3.2.0-24-generic-pae, i686: installed
 fglrx, 8.960, 3.2.0-24-generic-pae, i686: installed
 Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6310] [1002:9802] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1611]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Hewlett-Packard HP 3105m
PackageArchitecture: all
 PATH=(custom, user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic-pae root=UUID=601a5d17-56cf-4ac3-b5c7-c3a2a7665e11 ro quiet splash
SourcePackage: compiz
UpgradeStatus: Upgraded to precise on 2012-05-03 (1 days ago)
XorgConf: Error: [Errno 13] Permission denied: '/etc/X11/xorg.conf'
dmi.bios.date: 07/07/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.13
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1611
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 96.3A
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.13:bd07/07/2011:svnHewlett-Packard:pnHP3105m:pvr059D100000250000000320100:rvnHewlett-Packard:rn1611:rvr96.3A:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP 3105m
dmi.product.version: 059D100000250000000320100
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:
version.fglrx-installer: fglrx-installer N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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

** Tags: apport-bug compiz-0.9 i386 precise regression-update ubuntu

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  Compiz CPU load is 100% when system idling and screen blank

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