[Bug 27184] Radeon, KMS, 6.12.99: Sleeping screen doesn't wake up reliably

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

--- Comment #18 from Oliver Winker <oliverml1@xxxxxxxxxxx> 2011-11-14 14:01:30 PST ---
(In reply to comment #17)
> 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.

Ok, interesting to know. Now somehow the way using "xset dpms 240 0 0"
(stand-by) quite surely made a difference for me at the time (<3.1) - but I
can't prove and explain in detail.

Now currently I'm using "xset dpms 0 240 0" (suspend) with 3.1 and until now it
wakes up quite reliable. Which would be in inline with your info, that the
driver operates on the same two states, as with stand-by. 

Maybe I'll also retest again the KDE power mgmt setting way, where I originally
observed the wake-up problem. Maybe it's some screwed side effect in the end. 

> > 
> > 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.

No, no - I'm really talking about pure display suspend/resume, on a desktop
with an Asus screen. Only the display is suspended and should nicely wakeup
again, when I tick the mouse ;).

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