Comment 120 for bug 568711

I experienced the does not resume after suspend problems with ubuntu 10.4.2 LTS on a lenovo thinkpad L420. I searched a lot and tried many things. The thing that seems to remove all problems for me is changing the quirks input in pm-suspend. I read the man page of pm-suspend, which was very helpful. Then I tried pm-suspend in the terminal with various quirk combination that seemed reasonable to me. I have a successful resume with:
pm-suspend --quirk-dpms-on --quirk-radeon-off --quirk-s3-bios --quirk-s3-mode

To get this working for the system I commented out all other quirks that are listed in
/usr/lib/hal/scripts/linux/hal-system-power-suspend-linux

Hope this helps anybody
Regards,
Maarten