Adam Belay ?????: > Also we don't really control display brightness. It would be good, cause on my laptop LCD's highligting lamp is automatically adjust after AC or battery is used. On this laptop i had not manual control over it (i had on old Toshiba Tecra 550) and that hurts. Default AC brigtness is far too high :-( As well, while on AC i'd prefer to see fancy screensaver, on battery i'd prefer to have waste no CPU/GPU power (no screensaver app) and turn LCD off. I don't know of CRT's brightness has big impact on power consumption. Of course gamma, color maps and similar funcitons belongs to X, but hardware, like a lamp behind LCD might be as well controlled by kernel.