I have a Lenovo Yoga X1 2nd Gen laptop with Ubuntu 16.04
I have both windows 10 and ubuntu installed.
In windows, everything works fine, but in ubuntu when I press the brigghtness buttons, ubuntu shows me the value of the brightness is changing, but the actual brightness of the screen is not changing at all! I have tried most of the methods what I found online, like changing things in 20-intel.conf, grub. Neither of them worked. What should I do?
xrandr --output eDP1 --brightness 1 # no dimming
the following command changes the brightness to max, and I can change the value 1 to something between 0 and 1 which then effectively changes the brightness. Is there a way to make the brightness keys work?