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I want to change the volume without waking my laptop display up.

This question wants to accomplish the same but has no usable answer (turning it off again is not an option as the environment is light-sensitive, the display has to stay off the entire time)

As display wakeup seems to be managed by gnome-power-manager I read this ...
which pointed me at IDLETIME ...
which seems to be managed by gnome-idle-monitor....
which left me without leads as my C is too bad.

So to summarize: I want to be able to use some specific keys on my keyboard (e.g. volume keys) without resetting the IDLETIME counter -> resulting in gnome not waking up my display)

How can I accomplish this?

Update: I don't care about the way (preventing IDLETIME reset / some other obscure dark magic), for me only the result - display staying off - matters.

Update 2: Also, this shouldn't even happen so why is my display waking up?!

Fabian N.
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  • Assuming laptop for obvious reasons, do you have a function (Fn) key to turn off display?, here for me it's F2. So here, Fn+F2 turns off the display until I hit Fn+F2 again, other key presses like for volume work but display stays off. – doug Aug 09 '18 at 20:39
  • @doug That would have been nice. =( But no I don't have one, its a Lenovo W530. From what I gathered, it seems to be easier to just go with some of the available workarounds like disabling dpms on X, turning the display off with `vbetool` and implementing a script to wake it up again myself. `xrandr --output LVDS-1 --off` seems to work too but I hoped I can just get gnome behave properly from the beginning ... – Fabian N. Aug 10 '18 at 05:26

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