https://bugs.freedesktop.org/show_bug.cgi?id=46711
--- Comment #17 from Tvrtko Ursulin tvrtko.ursulin@onelan.co.uk 2012-04-20 03:07:55 PDT --- Still leaves the monitor in that weird state (black screen but not powersave, can't get to OSD menu) after re-plug.
"xset dpms force off" can put it into proper power save.
"xset dpms force on" then makes it work.