Reed,
Thanks for the links. I'll take a look and do some testing...
Now I'm using radeonhd driver. I had some issues after upgrading due to conflict with proprietary driver (fglrx). Had to remove that driver and reinstall mesa related packages, cos' was causing kde crashing, because a there was no libGL available.
I followed this directions:
http://www.linuxquestions.org/questi...-fglrx-817050/
I'll do some tests with the information you gave me. Thanks a lot.
Regards,
Matías