Re: 1.0-8774 + FBSD 6.1 & problems with AGP
What kernel are you running?
GENERIC has device agp. This might interfere. Try building a kernel without agp or turn it off by adding hint.agp.0.disabled="1" to /boot/device.hints.
One thing to note though, I've noticed the nvidia-driver port building WITH_FREEBSD_AGP eventhough you select not to use it.
One way I found was this:
then edit work/NVIDIA-FreeBSD-x86-1.0-8774/src/nv-freebsd.h
look for NV_SUPPORT_OS_AGP make sure it's undef.
make all install if everything is set correctly.