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Whenever KDE (I think) detects no mouse or keyboard activity for a while, it dims my laptop screen, then turns it off. I don't want that when I'm watching a movie.

Is there a setting somewhere to disable this behaviour based on running applications?

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2 Answers 2

Reset to default
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Presuming you're using KDE4, you can try a command line call similar to the one's used here

From JanGerrit

Select allqdbus org.kde.powerdevil /modules/powerdevil setProfile <Profilename>

Replace with the name of a preconfigured profile you added (I think there's something like this called "Presentation" or something similar)

And or

From Gen2ly

Came across today that dbus has an inhibit command i can use. Not the same thing but looks like powerdevil doesn't have the ability to disable power management.

qdbus org.freedesktop.PowerManagement /org/freedesktop/PowerManagement \
org.freedesktop.PowerManagement.Inhibit.Inhibit
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    So far I've tried $ qdbus org.freedesktop.PowerManagement.Inhibit /org/freedesktop/PowerManagement Inhibit MPlayer muuu ...it doesn't seem to have worked. It does look like I'm on the right path though.
    – György Andrasek
    Commented Nov 19, 2011 at 4:50
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Since KDE 4.5 (or 4.6), functions have changed. Now use

qdbus org.kde.kded /org/kde/Solid/PowerManagement loadProfile <ProfileName>
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