Comment 4 for bug 473876

I have tried the workaround found in http://launchpad.net/~x301/ (deactivating CPU cores during suspend/resume) which worked well for me in 8.10, this didn't help (actually gave me "flashing moon" during suspend phase and not only during resume).

I also tried stopping gdm so I had no X server running, and then running /etc/acpi/sleep.sh as root, this resulted in "flashing moon"-freeze during suspend (didn't suspend properly) within 2-3 attempts (replicated twice, first time it happened on second attempt, second time it happened on third attempt).

I so far have not seen the problem occuring when it's actually suspending (only when resuming) when I run with X server running and without the workaround. I'm going to try to use it normally (with X) with the workaround and report back later if it seems to change anything.