My laptop (specs below) would not resume from suspend. I would get a blank screen and I was forced to reboot. I found that executing the follow command resolves the issue.
sudo pm-utlity --quirk-test --quirk-s3-mode
I could not add this quirk to any of the hooks because it gets disabled by /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler
I am requesting that my laptop be added to the quirk database at 20-video-quirk-pm-hp.quirkdb so that the quirk is added automatically.
OS: Ubuntu 12.04.1 LTS
Video Card: HD Radeon 4650m
pm-utils hasn't been touched in eight years, none of this is likely to get addressed. Closing bugs and disabling the bz product.