X performance problems with Matrox G550

[Thomas Winischhofer]

Martin Ebourne wrote:
> On Thu, 2004-11-04 at 13:53, Thomas Winischhofer wrote:
> 
>>Martin Ebourne wrote:
>>(WW) MGA(0): Failed to set up write-combining range (0xd8000000,0x2000000)
>>
>>
>>MTRR support in your kernel seems to be disabled.
> 
> 
> Sorry but that doesn't make sense to me. I described in that email how I
> could add a write-combining range manually by using:
> 
> # echo "base=0xd8000000 size=0x2000000 type=write-combining" >| /proc/mtrr
> # cat /proc/mtrr
> reg00: base=0x00000000 (   0MB), size= 512MB: write-back, count=1
> reg01: base=0xd0000000 (3328MB), size= 128MB: write-combining, count=1
> reg02: base=0xd8000000 (3456MB), size=  32MB: write-combining, count=1
> 
> Surely if the kernel support was disabled that wouldn't work?


Erm, my appologies. I just took a (obviously too quick) look into the log.

Anything MTRR related in the syslog?

Thomas


-- 
Thomas Winischhofer
Vienna/Austria
thomas AT winischhofer DOT net	       *** http://www.winischhofer.net
twini AT xfree86 DOT org