Originally Posted by AaronP
Are you doing 'echo mem > /sys/power/state' while X is running on the active VT? If so, don't do that! You have to VT switch away before triggering the suspend. Also, you should not be running vbetool if you're using the nvidia driver. The kernel module should know how to reinit the card after resuming.
This problem happens while X is not even running at all! 'vbetool post' is disabled by default, but I was trying it anyways, since it causes my NV34 (GeFroce FX 5500) to resume.