It is not a secret anymore that you are able to freeze your system and save its state to disc for resuming work later. Windows calls it hibernation and linux talks about suspend to disc – but it’s about the same thing.
The big advantage of this technique is simple: loading times are cut down to a minimum as you resume the previous state.
I finally implemented it here on my laptop as I was fed up with the booting times at home. Anyways – if you want some documentation for it, peek at the TuxOnIce Homepage here.
Regarding nvidia gfx cards, I got some great news: No extra patching was needed at all. Everything worked ‘out of the box’. All I had to do was removing the nvidia module entry from the blacklisted modules file… and my system went frozen for being resumed later.