Comment 3 for bug 512722

My issue is tiny, but maybe it'll provide a clue:
From the System menu -> Shut Down... -> Suspend the screen fades completely as needed.
From the Power button, the computer suspends a bit before the UI finishes to fade. (and the screen turns off. No problems here). Then, when I resume, the fading continues from where it stops, so I can see the darkened content of the screen for 2-3 seconds. When the fading completes, the password dialog shows up and everything's fine.

So I guess it's a lack of synchronization between the GUI and the physical power state.

I run Ubuntu 9.10,
Linux 2.6.31-18-generic #55-Ubuntu SMP Fri Jan 8 14:55:26 UTC 2010 i686 GNU/Linux