Review Request 114807: Don't dim display if backlight brightness is already 0

Alexander Mezin mezin.alexander at
Thu Jan 2 12:14:22 GMT 2014

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(Updated Jan. 2, 2014, 12:14 p.m.)


This change has been marked as submitted.

Review request for kde-workspace and Dario Freddi.

Repository: kde-workspace


Some drivers report backlight brightness == 0 when display is switched off with DPMS (for example, Intel driver on my laptop).
If screen was switched off before dimming was started, it remembers 0 as previous backlight level. When I move mouse/press key, display doesn't switch on, because powerdevil sets brightness to 0.
This patch fixes the problem for me. It just doesn't change backlight brightness if it's already 0.


  powerdevil/daemon/actions/bundled/dimdisplay.h f917d71 
  powerdevil/daemon/actions/bundled/dimdisplay.cpp 39e0636 



It works on my laptop.


Alexander Mezin

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