I have a question for the linux experts... I have an Asus laptop with Intel graphics, and when I run Ubuntu 11.10, my display brightness can't be adjusted. I can change the slider, but it does nothing. The display brightness is fixed at about half bright, and I want it brighter. I found that if I boot with 'acpi=off' then the brightness slider DOES work, and everything is peachy... My question is, if I make that permanent change to my /etc/default/grub file (acpi=off), then what else might be or is affected by this setting. I'm hoping there are no other ill side-effects from doing this, but I have no idea what's going on or what it is really doing when I make that change. Am I likely to lose other functionality of any kind? Or break anything?