agp on sis 661
jwl at io.dk
Fri Nov 11 13:21:50 PST 2005
I've had some problems with AGP support for the SiS 661 chipset. It seems
to be found:
agp0: <SiS 661 host to AGP bridge> mem 0xe8000000-0xebffffff at device 0.0
And this it was sysctl says:
dev.agp.0.%desc: SiS 661 host to AGP bridge
dev.agp.0.%location: slot=0 function=0
dev.agp.0.%pnpinfo: vendor=0x1039 device=0x0661 subvendor=0x1043 subdevice=0x8113 class=0x060000
And a /dev/agpgart exists.
The real problem appears when I try starting X with the nvidia-drivers.
The SiS 661 chipset is not supported by the nvidia AGP driver (it was the
same under Linux, so I used the AGPGART module there), so I should used
the native FreeBSD AGP support. I have the right NvAGP option in xorg.conf
and everything, but my machine reboots when X is started. No error message
is logged anywhere.
The driver seems to work fine with my gfx-card, a GeForce4 MX 4000,
because X runs fine with AGP disabled, but with half the performance
(glxgears) than I had under Linux.
Does the FreeBSD AGP driver really supports SiS 661 or is it only finding
it? And is there some way to at least get some error-message out from the
If this is not the right list for this sort of thing, then please tell me.
Jeppe W. Larsen
"Logic is the beginning of wisdom; not the end."
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