I recently purchased a new laptop (an Asus VivoBook F200MA) for using as my main Linux box. Installing everything went smoothly except for one thing: adjusting the brightness didn’t work, neither via the normal keybindings or with xbacklight.
Using the screen with the brightness set at 100% is both battery-draining and eye-straining1 so I really needed to get it fixed. I found a small application called light which worked right out of the box.
The commands are easy to remember too:
Like being hit with the fire of a thousand suns. ↩