Which app or method do you use to control brightness ?

[I O U]

Played around with a few options since starting on the Linux journey about 6 months ago (dual-booting with Win7).

I don't even remember the 3 or so other options I've tried, but this is the best brightness controllor I've come across (should work on any Ubuntu-based distro., and surely Debian as well ?):

Brightness Indicator : Easily control screen brightness in Linux Mint (Ubuntu)
https://www.youtube.com/watch?v=k5_HyOT519U

Terminal Commands for installation :
sudo add-apt-repository ppa:indicator-brightness/ppa
sudo apt-get update
sudo apt-get install indicator-brightness

 

[Thor]

FN key + Down Arrow works quite good

 

[Drake2007]

xrandr --output LVDS-1 --brightness .85

 

[envo]

I hit the button on my monitor

 

[SauRoNZA]

FN key + Down Arrow works quite good

well.

Is what you are looking for.