https://bugs.freedesktop.org/show_bug.cgi?id=38488
--- Comment #7 from Harald Judt h.judt@gmx.at 2011-06-23 11:21:19 PDT --- A strange thing: Accidentally, I put the computer into suspend mode instead of hibernation. Resume was successful, and the power profile and clock readings were ok this time.
So suspend-to-ram seems to work correctly, while suspend-to-disk does not.