I have tried messing with my xorg.conf. I have tried xbacklight. I have tried using dodgy bash scripts i found on the tubes of the internet. I have not yet found a way to turn my goddamn laptop's screen brightness down!!! Its stuck on max and i have 30 mins battery life!

I have heard tales of a mythical "slider" in display settings but i have found no such "slider".
It is probably obvious, but i'm sure theres a solution!

Thanks in advance.