https://bugs.freedesktop.org/show_bug.cgi?id=100364
--- Comment #3 from John Brooks bugs.freedesktop@fastquake.com --- (In reply to Alex Deucher from comment #2)
Do you physically turn the monitor on/off with the button on the monitor or just let dpms do it's thing?
I'm turning it on and off with the button. I seem to recall that it would sometimes stay blank when the desktop environment would blank it (after the timeout), but I can't seem to reproduce it. Definitely happens with the button though.