Hi, welcome to the Sabayon Linux forums.
My Dell Studio 1555 is overheated. I used to solve this problem simply installing ATI drivers for my
ATI RADEON HD 4800. But this time it doesn't seem to work.
I've tried to install them using
but the temperatures were still high...
Did you also configure Sabayon to actually use them or did you just install them?
So i tried to install drivers from ATI websites but i get an error during
script installation and I can't understand it.
Manual installation from sources in Sabayon is discouraged and unsupported, moreover it is dangerous especially with drivers and similar packages. If you installed that package you should remove it as soon as possible and reinstall the Sabayon version. If a package available in the repositories doesn't work, you have the right of coming in the forums and ask for help or go in the bugzilla, but similar approaches could be really dangerous for your system.
Furthermore, I used to have Sabayon 8 (GNOME 3) some months ago and in that case i haven't had any overheating
problem from the beginning...!
This is because Sabayon used proprietary ATI drivers by default in that version, unfortunately ATI drivers progressively became harder to support out of the box, introducing various instabilities and pretty much conflicting with the open source radeon
drivers. Since the radeon
drivers have a wider range of compatibility with ATI cards and are generally more stable, the proprietary drivers are no more included by default in Sabayon and require manual installation.
If i install ATI driver from the website I get 12.6 version. In the other way (sudo equo...) i get 12.8...Why??
Either your card is considered legacy by AMD or they classify as stable an older version of the ATI drivers.
Anyway 12.6 version of the driver is available in Sabayon repository too.