la, 2006-06-10 kello 08:47 +0200, Stefan Bellon kirjoitti:
> Jim McQuillan wrote:
> > My guess is flakey driver for your video card in X.org.
> 
> > What kind of video chipset are you using?
> 
> It's a Via Epia Eden board. I don't know the exact model but have to
> look on Monday. But I think they have a Unichrome video card, haven't
> they?

This sounds like the problems we have experienced with some unichrome
based thin clients. The unichrome driver in X.org is buggy and doesn't
work with all the chipsets properly. There are better drivers available
from unichrome and openchrome projects:

http://unichrome.sourceforge.net/
http://www.openchrome.org/

Unichrome project focuses now more on stability but Openchrome project
is continuing developing also new features. We have used the unichrome
driver for quite some time, but did the switch to openchrome a few
months ago as it worked with higher resolutions on some of the thin
clients we use.

If you want to try if openchrome fixes the problem, you can download the
openchrome driver for LTSP 4.2 from here:

http://www.opinsys.fi/tuki/openchrome/via_drv.so

The sources are here (svn snapshot from little over month ago):

http://www.opinsys.fi/tuki/openchrome/openchrome.tgz

Copy the via_drv.so to /usr/X11R6/lib/modules/drivers/via_drv.so under
your LTSP NFS-root. It replaces the old via driver, so copy the original
version to a safe place in case you experience problems.

I hope this helps with the problems you are having. Replacing the driver
fixes also other bugs in some unichrome chipsets, so this fix can help
also others.


Veli-Matti Lintu




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