Hi all, Yesterday I installed oS 13.1 and it went smooth. I was afraid of it because of the missing fglrx for my config - that is why I skipped oS 12.3, more precisely, went back 12.2 after a day's usage. I have an old ATI Radeon HD 4730 (RV770) video card. Now the fan is less loud than it was in 12.3, but noisy compared to the fglrx driver used in 12 2. Now I read an X.org page (http://www.x.org/wiki/RadeonFeature/) and found the following line Select the profile by echoing the selected profile to /sys/class/drm/card0/device/power_profile. What does that mean and how to do it? Now the profile is 'default' but I think 'mid' or 'low' would be sufficient for me. There is mostly text on my screen, no games at all. BTW, oS 13.1 with KDE 4.12 Thanks, Albert