I have a Vaio VPCEA36FG laptop and both windows.8 and elementary OS (ubuntu 12.04 kernel) installed on it. when I am in windows everything is just fine, fans work perfectly efficient and my battery lasts at least two and a half hours. but in linux I have very loud fans working at high speed and very low battery life (something between 45 mins and 1 hour) which I believe most of it are wasted by unwarranted fan speed.
I tried jupiter, flgrx drivers and a bunch of other packages that I can not even recall names of them. but nothing works and I still have loud fans and It drives me crazy.