Comment 129 for bug 578673

I've got success with the latest 2.6.36 mainline kernel dev snapshot:

http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/2010-10-13-maverick/
(don't try the rc7 on any older snapshot - just this one worked)

Using the standard Maverick 10.10 x64 installation which includes nVidia proprietary 260.x beta driver series

How-to:
1) installed the kernel headers, headers-generic, image from the above URL
2) make sure that dkms has rebuilt the nvidia.ko for this kernel, otherwise you're out of luck with Xorg
3) sudo chmod -x /usr/lib/pm-utils/sleep.d/94cpufreq (otherwise 2nd resume when running on batteries may fail; please report if this was needed by trying multiple suspend/resume cycles with AC power disconnected)

Reboot. No more frozen system stuck on black screen on resume, no matter if resumed while on AC or on battery power.