Problem with xcompmgr on Radeon card

[Francesco]

Vladimir Dergachev wrote:

>
>
> On Tue, 5 Oct 2004, Francesco wrote:
>
>> I have X.org 6.8.1 with this snapshot driver for radeon:
>> http://freedesktop.org/~fxkuehl/snapshots/radeon-20041003-linux.i386.tar.bz2 
>>
>> Everything works fine including tv-in and dri with 3d acceleration 
>> and I get about 1400 fps with glxgears.
>>
>> The problems start when I run xcompmgr, it works (and glxgears 
>> continue to give me high FPS) but X in general is very slow, 
>> unusable. I have read of other people in the internet with problems 
>> with ati cards and x.org 6.8.1, but here everything works except 
>> xcompmgr (same behaviour with metacity patch to enable composition 
>> manager).
>>
>> When I launch X I noticed this line:
>> (WW) RADEON(0): Failed to set up write-combining range 
>> (0xe0000000,0x4000000)
>> I think that can be related with my problem.
>>
>> Any hint to solve this?
>
>
> Are you by chance running with vesa framebuffer and 2.6.x kernel ?

In fact i'm running VESA framebuffer on kernel 2.6.8.1
I had some problems with Radeon fb and software suspend 2.

> There was some posts that seem to imply that vesa fb sets up mttr for
> visible part of framebuffer only and this can mess up X.org.
>
> Try using radeon framebuffer driver.
>
I'm recompiling kernel with radeon fb instead of vesa.
Will post here results.

>                         best
>
>                            Vladimir Dergachev
>
>
>> Thanks.
>> Frankk
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