Hi there Ionuț! according to ATI Catalyst wiki ( http://wiki.archlinux.org/index.php/ATI_Catalyst): "There is a repository called *[catalyst]* which contains *newest stable catalyst driver* and some additional packages like *patched xorg-server*. This repository should now work with any kernel and with multiple-kernels systems (read Stock and Custom Kernels<http://wiki.archlinux.org/index.php/ATI_Catalyst#Stock_and_Custom_Kernels>section) and it is updated most frequently. To use it you need as root: *1)* Edit /etc/pacman.conf and add those lines above all other repositories" That's why I put it there :p Thank you very much!