I saw that email in the archive. I had the same problem. The solution was to be a little more humble and switch to 16 bit color depth. Change the line DefaultDepth 24 to DefaultDepth 16 in the XF86Config.
hope it's not too late. From: Eric <[EMAIL PROTECTED]> I am having an impossible time trying to make my SiS 6326 AGP card (with 8MB of VRAM) work with the Debian unstable distribution (XFree86 4.0.2). When I run "startx" with the attached XF86Config-4, it says the following: Fatal server error: AddScreen/ScreenInit failed for driver 0 -- Sent through GMX FreeMail - http://www.gmx.net
