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Hi,

I seem to have discovered a nasty interaction between framebuffer and DRI/DRM 
in OpenGL applications. I can reproduce this problem in at least Return to 
Castle Wolfenstein (version 1.1b) and Tux Racer.

I am using a 32 MB ATI Rage Pro 128 on Debian woody (XFree86 4.1). If I run 
Tuxracer or RTCW, and wait for the game to load, everything is alright. 
However if I switch to a spare virtual terminal, and switch back to X, the 
fonts become illegible -- they just appear as coloured boxes with no 
outlines, making things unplayable.

The problem does not occur when using software based OpenGL rendering which is 
why I believe DRI/DRM is involved. This problem only occurs when framebuffer 
is enabled in the kernel, if framebuffer is disabled the problem disappears, 
so I believe framebuffer is also at fault.

Greatful for any help...

Chris Howells
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