SiS 648FX AGP problem

Hi,

Whenever i try to enable DRI in X, my PC hangs on startup of the X Server.
(If i do not load the agpgart and sis-agp modules, DRI is disabled).

I have a Gigabyte mainboard with a SiS 648FX Northbridge, and and a Radeon 9200SE agp graphics board.
i use gentoo-dev-sources: kernel-2.6.1 with gentoo patches.

I have seen some patch mentioned on this list by Oliver Heilmann, but couldn't find it anywhere. If he, or someone else who has this patch could publish it, or send it to me, i would appreciate that.

cheers
Robert Simons