[Powerdevil] [Bug 357288] Setting "Screen Energy Saving" in "Energy Saving" config has no effect

[mjay]

https://bugs.kde.org/show_bug.cgi?id=357288

--- Comment #19 from mjay <michaeljensendk at hotmail.com> ---
(In reply to mjay from comment #18)
> (In reply to Al from comment #14)
> > I am having similar issues here with the power saving not keeping the screen
> > blanked. I can set it to blank the screen (in 1 minute for example), and it
> > will blank all 3 monitors. They will go blank, even go into their power save
> > mode for a second, but then everything comes right back on again. It does
> > the same if I set a shortcut to blank the screen - goes off but then back on
> > again in about 10 seconds or so. I am using an AMD X3900 X570 system, Radeon
> > RX 5500XT video, 3 monitors (one of them is a different size than the other
> > 2 FWIW) similar to a related report listed under bug 440350. Currently
> > running the latest version of Fedora 35 KDE Plasma 5.23.4 Framework 5.89.0
> > kernel 5.15.12-200 and using X11 (Wayland does not work well here - maybe
> > that is a clue).
> 
> This sounds like a similar problem i had with Kscreen2. Kscreen2 would, note
> that a 
> displayport connected monitor was powered down, then kscreen2, then moved
> the windows
>  off that monitor and onto other monitors, tripping a event, powering them
> back on again.

EDIT: My problem, was not xscreen2, but rather my monitors in a hdmi/dp setup,
with its input source detection, that was the culprit. not xscreen2, see
https://gitlab.freedesktop.org/drm/amd/-/issues/1719

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