Comment 2 for bug 1389215
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| Hans Deragon (deragon) wrote Re: Brightness controls are not working in Unity / Xorg. | #2 |
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bbfa235
(Get the code!)
Some more clarification. I tried under KDE Plasma 5.1 (Neon) and still I could not change the brightness of the backlight.
However, the CLI commands that fail in a terminal running under an Xorg session work flawlessly under a console (<CTRL><ALT><F1>).
cd /sys/class/
echo 5 >brightness # Works under the console!
echo 10 >brightness # Works under the console!
This all suggest that somehow, Xorg is inhibiting the brightness control.