How to change LCD brightness from command line (or via script)? Ģ- Creating a. I press the Function Key + F2 or F3, and even when the animation pops up, and shows increasing or decreasing on the brightness level, doesn't change anything.ġ- Installing x-backlight like described on these posts: I'm using Ubuntu 18.04.4, and since I've installed it the Brightness controller doesn't work.
