ok i know the title sounds a little lame.. but this has prevented me from long to adopt Linux completely and makes me go back to Windows just for Multimedia... I am running Catalyst 12.6 in both Arch Linux and Ubuntu 12.04, and Catalyst 12.4 in Windows. I use VLC primarily to play videos but I have also got Mplayer with vaapi in both distros.. regardless of what quality of video I play, I get very loud fan churning in Linux, while in Windows even 1080p videos play very quietly...

I have an HP G42 laptop with AMD 6370M graphics and Core i3 370M 2.4 gig processor with 6 GB ram...Is this a limitation of UVD implementation in fglrx?? I have also tried xbmc-xvba branch, there the videos play flawlessly with minimal CPU usage but again the issue persists...

Is this the problem with AMD graphics based laptops only (or am i doing something terribly wrong with xorg config) or does the issue persists with Intel and Nvidia hardware too?

thanks in advance for the much needed help