Poor compositing performance on 965Q chipset with intel 2.2.1 driver

[Barry Scott]

Bill Crawford wrote:
> 2008/5/9 Barry Scott <barry.scott at onelan.co.uk>:
>
>   
>>  # cat /proc/mtrr
>>  reg00: base=0x00000000 (   0MB), size= 256MB: write-back, count=1
>>  reg01: base=0x10000000 ( 256MB), size= 128MB: write-back, count=1
>>  reg02: base=0x18000000 ( 384MB), size=  64MB: write-back, count=1
>>  reg03: base=0x1c000000 ( 448MB), size=  32MB: write-back, count=1
>>  reg04: base=0x1e000000 ( 480MB), size=  16MB: write-back, count=1
>>  reg05: base=0x1f000000 ( 496MB), size=   8MB: write-back, count=1
>>  reg06: base=0xe0000000 (3584MB), size= 256MB: write-combining, count=1
>>
>>  Another suggestions we can check out?
>>     
>
> That looks suspiciously like the "fan controller" related BIOS bug
> that turned up not long ago. Can't remember if it made it into
> bugzilla, but it was fixed by a bios upgrade ...
>
> Suggest looking in BIOS options for something to do with a fan and
> turning it off.
>
>
>
>   
Are you saying this because of the MTRR use? I have another 965Q box that
has only 3 entries in MTRR and has the same problem.

Barry