Hardy Display problems

[Krsnendu dasa]

I have installed Hardy from Beta with all updates applied. I think I have
updated the ltsp tree once some time ago also.

I have a problem with display performance. Under K12ltsp6 (ltsp4.2) I had
tux maths, flash videos etc running well (and that was on an old system (AMD
2500XP with 2 GB RAM). I upgrade to Feisty on a Quad Core Intel machine with
4 GB RAM. Again Flash and other graphics was fine. Now I have installed
Hardy, screen redraws are slow even on ordinary web pages and Flash videos
are especially jerky. (I have turned off hardware acceleration for flash.)

I have LDM_DIRECTX=True.

I have tested it with echo $DISPLAY and directx seems to be working.

I suspect that the wrong driver is being used for the graphics card. I am
not sure which one.

If I do lspci on the client it says:

01:00.0 VGA compatible controller : ATI Technologies Inc 3D Rage Pro 1x/2X
(rev 5c)

I tried the following settings for xserver one by one:
XSERVER=vesa
XSERVER=ati
XSERVER=radeon

I also tried X_COLOR_DEPTH=16

Each time all I got was a black screen with a white dash flashing in the top
left corner.

Using lsmod the only thing which seemed relevant was:
intel_agp 25492 1
agpgart 34760 1 intel_agp

When the xserver does start, I see this error when I press ALT-CTL-F1:

OIL: ERROR liboiltest.c 361: oil_test_check_impl(): illegal instruction in
mmxCombineAddU

Can anyone give me advice how to troubleshoot my poor graphics performance?

Should I try updating the ltsp image?
I think my current version is 2008212-ubuntu3. Perhaps version ubuntu4 will
fix my problem. Can I just do:
sudo chroot /opt/ltsp/i386/
sudo apt-get upgrade
sudo ltsp-client-build
Or do I have to start from scratch (delete /i386 directory then run
ltsp-build-client)?

Is there another graphics driver I need to load etc.?
Which log files can I look at? How can I export them to the server so I can
look at them more easily and email them?

All help appreciated.

Thanks.
Krsnendu dasa
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