Brightness button does not work
63839
Cannot change brightness (Ubuntu 16.04 LTS, Unity)
139406
Socket Tester all indicators light up
141520
Night light and Redshift don't work
107194
Screen brightness - Night Mode
143921
Why is my spot light not working?
19998
Volume Hot Key not working in Lubuntu
101886
How to permanently set screen brightness level in Ubuntu 12.04 on Dell Vostro 2420 laptop?
152644
Cannot set LED monitor to native resolution
83906
Desktop doesn't remember brightness settings after a reboot
143864
Why isn't the Printscreen button working in Gnome?
158035
Ability to set even below the minimum brightness on iPad
75669
Screen brightness isn't taking effect on a Lenovo Z570
30491
Brightness Controls Not Working on a Dell Inspiron N4010 Laptop
117220
Why is the alpha channel not working?
118450
How can I adjust Touch Bar brightness?
17511
Touchpad gestures and holding keys does not work
69809
Dim screen past the minimum on Ubuntu