Re: Blank screen on resume
I've never been able to suspend/resume FreeBSD on any mobile platform I tried to on. Power management is therefore completely untested and quite possibly broken. Does S3 work reliably on your notebook (aside from the blank screen), i.e. can you log in remotely and interact with the system?
Note that suspend/resume without the NVIDIA driver loaded and X running is not supported, since the driver has no way to actually perform power management in that configuration.