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I want to set the following when booting lightdm: xrandr --output eDP1 --gamma 0.8:0.8:0.65.

I have tried:

  • Creating a startup application (works, but only after loggin in.
  • setting display-setup-script in /usr/share/lightdm/lightdm.conf.d/10-custom.conf (with both xrandr + bashscript.sh + xgamma)
  • Custom xorg.conf with gamma under Monitor.

Really cant figure out what I'm doing wrong. I have tried on both laptop (intel GPU) + desktop (nvidia driver).

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