Wow, that sure is crazy!
I'm afraid I don't have any suggestions right now for the nvidia driver, but as for the nv driver, I added LVDS support for GeForce 8 series chips just three days ago so I'm not surprised that it didn't work for you. If you have an external digital flat panel, you could try it with that. Otherwise you could give the current git version
That warning is a little disconcerting, but is hopefully harmless.