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MaxVerevkin / wl-gammarelay-rs

A simple program that provides DBus interface to control display temperature and brightness under wayland without flickering
GNU General Public License v3.0
119 stars 2 forks source link

How does it work? #27

Closed juanolon closed 2 months ago

juanolon commented 2 months ago

Hello, I've been changing my brightness with a custom script changing the value on /sys/class/backlight/intel_backlight/brightness. I always needed root permissions to do that, so i went looking for another solution. That's where i stumble into your program, which i do like it. But, i was puzzle when after changing the brightness with wl-gammarelay-rs the file /sys/class/backlight/intel_backlight/brightness didn't change. How does wl-gammarelay-rs does work?

Thanks!

MaxVerevkin commented 2 months ago

/sys/class/backlight/intel_backlight/brightness controls the backlight brightness. wl-gammarelay-rs dims the logical values of pixels. This is probably equivalent on OLED displays (they don't have backlights :smile:), but on LCD is is more energy efficient (and simply just better) to control the actual backlight.

MaxVerevkin commented 2 months ago

Does brightnessctl not work for you?

juanolon commented 2 months ago

Aah i see, good to know. No, i haven't tried brightnessctl yet. I went directly to wl-gammarelay-rs because it also had gamma and temperature features. I guess, i will use both tools then. thanks!