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[Launchpad Bug Tracker <898963@xxxxxxxxxxxxxxxxxx>]

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I have an AMD Radeon HD 6450 (512mb) GPU. On the live USB of the 12.04
Alpha 1, the performance is very poor. There is obvious window lag when
dragging them, and lots of hiccups when scrolling (smooth scrolling on
Firefox is horrible). Videos play as expected (YouTube + HTML5) and
games work as expected (Minecraft). The overall performance of the
desktop is laggy and not smooth at all.

If I grab a window and throw the cursor to the top of the screen, the
window moves up too far. This causes the grab animation to be shown in
the wrong place (about two centimetres above the grabbed area).

The open source Radeon driver should work perfectly for 2D. This problem
is not present in Fedora 16. It happens on both the "Ubuntu" and "Ubuntu
2d" sessions.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-2.5-generic 3.2.0-rc3
Uname: Linux 3.2.0-2-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
CasperVersion: 1.292
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,grid,imgpng,mousepoll,move,place,regex,resize,session,snap,unitymtgrabhandles,vpswitch,wall,animation,expo,ezoom,fade,scale,unityshell,workarounds]
CompositorRunning: compiz
Date: Fri Dec  2 05:57:41 2011
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 ATI Technologies Inc NI Caicos [AMD RADEON HD 6450] [1002:6779] (prog-if 00 [VGA controller])
   Subsystem: Device [1b0a:9096]
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
MachineType: Hewlett-Packard p7-1038
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: initrd=/ubninit file=/cdrom/preseed/hostname.seed boot=casper quiet splash -- BOOT_IMAGE=/ubnkern
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/22/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 6.06
dmi.board.name: 2AB1
dmi.board.vendor: FOXCONN
dmi.board.version: 1.00
dmi.chassis.asset.tag: MXU12106NH
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr6.06:bd03/22/2011:svnHewlett-Packard:pnp7-1038:pvr:rvnFOXCONN:rn2AB1:rvr1.00:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: p7-1038
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu7
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.27-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.10.4-1ubuntu5
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 2:2.15.901-1ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

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


** Tags: amd64 apport-bug compiz-0.9 performance precise radeon regression reproducible running-unity ubuntu
-- 
Desktop performance (2d) much worse than expected.
https://bugs.launchpad.net/bugs/898963
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