I'm seldom in this forum, so I saw this only today.
Have a look at http://en.opensuse.org/NVIDIA
. At the bottom are links to the NVIDIA Suspend HOWTO with a couple of tips.
I managed to get S2DISK working with using a patched NVIDIA-Linux-x86-1.0-7174 driver (an old one). See the page for instructions.
Right now, I'm trying again with the 8762 driver which just came out (June, 22th).
I'll post my results on the NVIDIA page on opensuse.org, so they're all in one place.