High CPU usage in Gnome 3 using ATI card

[szaby007]

I have Acer Extensa 5630 laptop with ATI 3650 video card. I installed Ubuntu 11.10, when i open a terminal window and run top i have 30-50% X and compiz CPU usage when i move the window or just the mouse. X doesn't use GPU at all. I tried the open source fglrx driver the AMD driver and the readon driver nothing works the only thing with some resolution was using Option "MigrationHeuristic" "greedy" in xorg.conf after that compiz generated normal levels but X still uses 30-50% CPU whenever i interact with the Desktop. Funny thing is when i turn off effects or change to 2D i get 50-70% CPU load.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu4
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,place,resize,mousepoll,move,session,wall,imgpng,gnomecompat,snap,regex,grid,animation,vpswitch,workarounds,fade,unitymtgrabhandles,expo,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Sun Nov 6 13:09:17 2011
DistUpgraded: Log time: 2011-11-06 12:16:13.126628
DistroCodename: oneiric
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 ATI Technologies Inc Mobility Radeon HD 3650 [1002:9591] (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:013c]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: Acer Extensa 5630
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=ba94ef9a-bd35-497c-925b-de78c178ec01 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to oneiric on 2011-11-06 (0 days ago)
dmi.bios.date: 03/19/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.30
dmi.board.name: Homa
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.30:bd03/19/2009:svnAcer:pnExtensa5630:pvr0100:rvnAcer:rnHoma:rvrRev:cvnAcer:ct10:cvrN/A:
dmi.product.name: Extensa 5630
dmi.product.version: 0100
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
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 1:6.14.99~git20110811.g93fc084-0ubuntu1
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

[szaby007 (szabymail)]

OK i installed Linux Mint 11 with Gnome 2 everything works fine i am thinking that the Gnome 3 3D interface is the problem

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bruce Pieterse (octoquad)]

Thank you for reporting this bug to Ubuntu. Oneiric Ocelot reached EOL on May 9, 2013.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Please upgrade to the latest version and re-test. If the bug is still reproducible, increase the verbosity of the steps to recreate it so we can try again.

Do feel free to report any other bugs you may find.