Public bug reported:
Whenever I set the power profile of my HD 4850 to "mid" using
echo "mid" > /sys/class/drm/card0/device/power_profile
the responsiveness of the UI degrades considerably. The windows move
slowly when dragging, and there's really bad tearing when scrolling on
any web browser. This doesn't happen with Unity-2D or other Window
Managers, and it didn't happen in 11.10's Unity.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.20.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CompizPlugins:
[core,bailer,detection,composite,opengl,compiztoolbox,decor,mousepoll,place,regex,resize,vpswitch,animation,imgpng,wall,move,workarounds,grid,gnomecompat,session,fade,snap,unitymtgrabhandles,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Oct 3 16:58:28 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.1.4, 3.0.0-12-generic, x86_64: installed
GraphicsCard:
ATI Technologies Inc Manhattan [Mobility Radeon HD 5400 Series] [1002:68e0]
(prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:0413]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
MachineType: Dell Inc. Studio 1558
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic
root=UUID=0f0fdcff-75bf-458b-8ce1-4d29d268905c ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/30/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0874P6
dmi.board.vendor: Dell Inc.
dmi.board.version: A12
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A12
dmi.modalias:
dmi:bvnDellInc.:bvrA12:bd03/30/2011:svnDellInc.:pnStudio1558:pvrA12:rvnDellInc.:rn0874P6:rvrA12:cvnDellInc.:ct8:cvrA12:
dmi.product.name: Studio 1558
dmi.product.version: A12
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu1
version.ia32-libs: ia32-libs N/A
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
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 oneiric running-unity ubuntu
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https://bugs.launchpad.net/bugs/865678
Title:
Bad performance when using the "mid" radeon power profile on Unity
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