https://bugs.freedesktop.org/show_bug.cgi?id=27184

--- Comment #17 from Alex Deucher agd5f@yahoo.com 2011-11-13 12:02:36 PST --- (In reply to comment #16)

As a workaround in the meanwhile, I deactivated the KDE screen power-mgmt and just use an initial "xset dpms 240 0 0", which just triggers a "stand-by" after 240sec and no "suspend". This works without problems (stand-by and wakeup from).

DPMS standby, suspend, and off states are all treated the same from the driver's perspective. The driver really only deals with 2 DPMS states on and off.

Anyway, I will also retry a bit and do some testing using "suspend" on a 3.1, to see if something changed.

When you say suspend, are you talking about the DPMS display state, or suspend and resume of the entire laptop? The two are very different.