Option "AGPFastWrite" "1" freezes X

[Slaven Peles <peles@cns.physics.gatech.edu>]

Hi,

I added Option "AGPFastWrite" "1" to the "Device" section of my XF86Config-4 
file (below), and when I restarted X I got a blank screen. Even keyboard 
wouldn't respond (tried ctrl-alt-f1 to get to text console, but it didn't 
work). I'm running sid with XFree86 from experimental 4.3.0-pre1v1, and 
kernel 2.4.22. I have Radeon 9000 card. AGP kernel modul loads fine. Does 
anybody know if this option is supported for my card or if any other option 
shouldbe enabled in order to use AGPFastWrite. I couldn't find any bug 
report, which describes this problem.

Thanks,
Slaven




Section "Device"
	Identifier	"Radeon 9000"
	Driver		"ati"
	VideoRam	32000
	Option		"AGPMode"		"4"
	Option		"AGPFastWrite"	"1"
EndSection