xorg optimization and mtrr

[Rob Brown-Bayliss]

I ran xine-check after gettign a warning from xine, and it said the following:

[ hint ] you have MTRR support but it's unused.
         It seems like your X server didn't set any MTRR ranges for the
         graphics card. Maybe upgrading your X server helps...
         You don't have a PCI graphics card, do you? AFAIK, MTRR only
         helps with AGP cards.

where do I set up this in fedora?

-- 
Rob