I'm currently using Ubuntu 14.04 on a Acer Chromebook C720, and one thing unfortunate about these laptops is that you cannot allow it to go to sleep while in Linux. In Unity, this is an easy fix in preferences, but does anyone know how to fix this in XMonad? What (and how) do I set to turn off sleep mode?

On another note, does anyone know how to turn the backlight up and down?

Sorry if this is in the wrong area, this looked like the best one.