[Powerdevil] [Bug 348529] Turn off screen after lock screen

[Chris]

https://bugs.kde.org/show_bug.cgi?id=348529

--- Comment #40 from Chris <inkbottle007 at gmail.com> ---
(In reply to Kai Uwe Broulik from comment #4)
> That script isn't particularly efficient.
> I like the idea of reducing the timeout for turning off the screen when it's
> locked (and/or making that a separate option since you might not want it to
> turn off at all while not locked), though. I added it to my todo list.
> Thanks.

What do you think of the script there
https://bugs.kde.org/show_bug.cgi?id=348529#c33?
It does not, on the face of it, rely on an infinite loop, and it works both
with x11 and wayland.

dbus-monitor --session "type='signal',interface='org.freedesktop.ScreenSaver'"
|
  while read x; do
    case "$x" in
      *"boolean true"*)
        echo SCREEN_LOCKED;
        kwriteconfig5 --file powermanagementprofilesrc --group AC --group
DPMSControl --key idleTime 60;
        qdbus org.kde.Solid.PowerManagement /org/kde/Solid/PowerManagement
org.kde.Solid.PowerManagement.refreshStatus
        ;;
      *"boolean false"*)
        echo SCREEN_UNLOCKED;
        kwriteconfig5 --file powermanagementprofilesrc --group AC --group
DPMSControl --key idleTime 600;
        qdbus org.kde.Solid.PowerManagement /org/kde/Solid/PowerManagement
org.kde.Solid.PowerManagement.refreshStatus
        ;;
    esac
  done

It is quick and dirty cut and paste but I think it works, and I don't see why
not?

As they say in https://bugs.kde.org/show_bug.cgi?id=348529#c39, it could help
having something like that integrated in System-Settings, instead on relying on
users hacks.

It is annoying having 30W plus, of monitor LED, glowing unnecessarily.
(https://www.thehomehacksdiy.com/how-much-power-watts-does-a-monitor-use/)

Keep in mind that for most users, monitor power button is not an option because
it scrambles up all the settings.

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