This is not a duplicate of #13474, as this issue was fixed for everybody else except the macbook. Apples do seem to be special.
Does this one go away when you run xgamma?
Then it's probably a duplicate of bug #16280.
Also is this referring to suspend to ram or disk?
Might possibly be fixed with 41d4bf718b4, please verify.
Does this issue occur with the preferred ati driver (xf86-vide-ati)? If so, please move this to the Driver/Radeon component.
Development of radeonhd has pretty much halted and development focus is on the ati driver. Please see http://www.x.org/wiki/radeonhd
If the issue does not exist in the ati driver (or if there is no response to this message), this bug will be closed as WONTFIX unless someone contributes a patch.
Closing due to lack of response. Please reopen and move to the Driver/Radeon
component if this issue persists with xf86-video-ati