On Mon, 8 Jul 2002, Cedric De Wilde wrote:
> Hello,
>
> I've installed a second screen on my computer, the pci graphic card is a
> permedia 2. My other screen is coupled with a radeon on agp. I've patched
> windowmaker 0.80.1 to have xinerama support. I've modified my startx
> script and it work well but after some times(5 min or less), the display
> on the screen controled by the agp card start to display strange thing (
> http://daique.dyndns.org/xinerama.jpg ).
>
> The maintainer of the wmaker's xinerama patch say it was related with
> the wideoram parameter, i've added it to fit to my 2 cards but it didn't
> work better. My XF86Config file is at http://daique.dyndns.org/XF86Config
> I've got a linux 2.4.18 kernel with xfs patch and XFree is 4.2.0 from
> slack 8.1
>
> Did somebody knew where this problem come from and how to solve it?
Those are driver bugs with hardware acceleration. Pixmap cache
problems from the looks of it. You'll probably want to add
Option "XAANoPixmapCache"
Option "XaaNoOffscreenPixmaps"
to your Section "Device" on the offending card to disable the
acceleration that's probably broken.
Mark.
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