I have ASUS ROG GL702, NVIDIA GTX 1070 graphics card. Just installed 18.04. Could adjust sound but not screen brightness with built in keyboard controls. There wasn't even a brightness slider to adjust in the right corner by where the volume is. And no brightness settings to change under the Power settings found in Activities.
Also when laptop goes to sleep, the screen stays black and I have to do a hard power down to reboot and get the screen back.
Does anybody know a way to fix this? I am total newb, no programming experience. Can open Terminal, but please fully explain any commands needed. Thanks
edit: tried what's described in this post but that did not solve it: https://askubuntu.com/questions/804775/brightness-hotkey-doesnt-work-on-laptop-asus-k501ux-ubuntu-16-04-1?noredirect=1&lq=1