On Wed, 2004-02-11 at 21:26, Alex Deucher wrote:
> I was looking through the the databooks regarding PCI gart and I
> noticed that r128, radeon, and r200 all do PCI gart the same way. that
> said, I also noticed that PCI GART is limited to 4 MB of system memory
> when used with a PCI card and 32 MB when used with an AGP card.
Where did you see that?
> I haven't yet looked at the gart code in the radeon driver, but perhaps
> it is trying to use more than 4 MB of system memory
The default is 8 MB for both AGP and PCI GART.
> and that is causing the slow down.
Perhaps, but I'd rather expect different symptoms, and it used to work
fine for me on older chips. Easy enough to find out though:
Option "AGPSize" "4"
("GARTSize" is an alias in newer radeon drivers)
> it may also explain why PCI gart seems to "work" on AGP cards and older
> radeons, but not on newer PCI ones.
>From what I remember, mostly AGP cards used to be problematic
traditionally, and only on x86. PCI cards being problematic is a recent
trend.
--
Earthling Michel DÃnzer | Debian (powerpc), X and DRI developer
Libre software enthusiast | http://svcs.affero.net/rm.php?r=daenzer
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