Comment 29 for bug 84991

With today's updates to Feisty, kernel 2.6.20.10 and fglrx 8.34.8, resume from suspend still failed with Post_Video =false or true, although with it true, resume would partial occur--screen would go light grey and then fade to black.

I now have in my /etc/default/acpi-support the following:

SAVE_VBE_STATE=false

POST_VIDEO=true

USE_DPMS=false

and the laptop suspends and resumes quite fine.