Situation on Maverick is the same in Lucid, but I had to add Xorg-crackers 
repository, because opengl apps crashed in fullscreen. My FPS in openarena is 
28-40 FPS and in compiz is 42 FPS. Openarena is playable but some games are too 
slow to play, when KMS is enabled, but when KMS is disabled Xserver is very 
unstable. Just for comparison, when I disable KMS I get 70+ FPS in compiz. 
 
-------------------
lspci --vv

1:00.1 Display controller: ATI Technologies Inc RV280 [Radeon 9200 PRO] 
(Secondary) (rev 01)
        Subsystem: Micro-Star International Co., Ltd. Device 9995
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 32 (2000ns min), Cache Line Size: 32 bytes
        Region 0: Memory at c8000000 (32-bit, prefetchable) [size=128M]
        Region 1: Memory at dfee0000 (32-bit, non-prefetchable) [size=64K]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-

-------------------

Version of mesa:

OpenGL vendor string: Tungsten Graphics, Inc.
OpenGL renderer string: Mesa DRI R200 (RV280 5960) 20090101 
x86/MMX+/3DNow!+/SSE TCL DRI2
OpenGL version string: 1.3 Mesa 7.10-devel

-- 
[RS100] desktop became slow after upgrading to Lucid
https://bugs.launchpad.net/bugs/544496
You received this bug notification because you are a member of Ubuntu-X,
which is the registrant for xserver-xorg-driver-ati.

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