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I Made Screen Brightness Control on Gnome Much Better
(gitlab.gnome.org)
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this post was submitted on 27 Nov 2023
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Typically their is some sort of low-level knob in
/sys(tryfind /sys | grep backlight) which can be used to set it to any value. Be careful playing around though because0is often completely off and it can be hard to set it back. (Although a reboot should fix it if nothing tries to be clever and preserve it at shutdown.)With my code, the lowest brightness setting should be closer to the minimum supported by the screen. There are some limitations with this because some screens become flickery at very low brightness levels. You might be able to circumvent the lower limit by using something other than the gnome settings daemon to set the brightness.