On Thursday 25 June 2009 15:31:29 Andreas Petzold wrote:
Hi,
since I've upgraded from F10 to F11, I'm getting corrupted graphics in
many kde apps. See
http://iktp.tu-dresden.de/~petzold/corrupt.png
for an example. Usually, the desktop background is displayed in
toolbars instead of the regular toolbar background, but sometimes this
also happens in other places. If I resize the window or mouse-over the
affected parts of the window, the problem fixes itself, but it will
reappear soon. I've only seen this with kde apps and not with others
like firefox. Since F10 and F11 use the same qt version I suspect the
intel drivel for my venerable i830 graphics chipset is at fault. Does
anybody on this list use F11 with kde on a machine with an (old) intel
chipset with or without the same problems that I'm seeing? I haven't
had the time to play around with any of the different acceleration
options of the new intel driver, I'll check that later.
It's odds-on that acceleration method is the key. Intel and ATi are both
rapidly developing their drivers to meet the more stringent requirements of
recent distros. Kde4 desktops in particular uses parts of the driver not
stressed in older versions. On this laptop I have an ATi display. The
desktop works best with AccelMode set to EXA, but kuickshow has corrupted
display in EXA and looks fine with XAA. It really does seem to be something
where you just have to experiment.
You might find
http://userbase.kde.org/GPU-Performance helpful
Anne
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