o Starting X with AGP 8x video cards on systems with KT400 AGP
chipsets cause system hangs.
Solution: this problem can be worked around by disabling AGP
(Option "NvAGP" "0") in your XF86Config file.
Alternatively, you may be able to enable AGP 8x on your KT400 based
system by overriding the default NVreg_EnableAGPSBA registry key.
To do this you can either:
- set the value on the modprobe command line; for example:
modprobe nvidia NVreg_EnableAGPSBA=1
- add an options line to your module configuration file,
usually /etc/modules.conf; for example:
options nvidia NVreg_EnableAGPSBA=1
and use NVIDIA's AGP (Option "NvAGP" "1" in the Screen section
of your XF86Config file).
Let me know if this works.