I have an Asus m50s laptop and I installed Ubuntu on it because Vista sucks obviously, and I run Ubuntu on my desktop. I can't however, use the volume or brightness controls via the fn key. Volume is only adjustable through the volume applet or rebinding. The volume through the fn key was working perfectly fine just yesterday and now it does not and I have not installed anything new or updated. The brightness keys never worked, and in fact I cannot adjust the brightness of the backlight at all, which means my screen is really dull when plugged in making it hard to see. There is no option to adjust the brightness through the powermanagement applet and the brightness applet available to add to the main panel also does nothing. I have looked all around but it seems impossible to find any information on this laptop model and it's really annoying me because it's a good laptop and I cannot use it to it's full potential.