options agpgart agp_try_unsupported=1
options agpgart agp_try_unsupported=1 doesn't work. It causes my computer to crash. That tells me that simply going into the agpgart.c source code and added a new PCI ID for the AGP bridge won't work either.
Anyway, it works without AGP for now, but I would like to see some support in the future. Perhaps nVidia could *gasp* contribute to an Open Source project and add the correct code to agpgart.c as well.