Quote Originally Posted by DaemonFC View Post
Using AMD's installer is stupid, they mutilate your system, and "when it breaks,you get to keep both pieces". Don't use them. (At least not directly) The buildpkg option might build a distribution package for you which installs in a well-behaved manner, but just using the script and installing it from that is a good way to wreck your system. It's not a matter of, but when. Even if it appears to work at first, an X server or kernel update will come along and break it. (This is another issue, separate from overwriting core system files.
Same advice typically applies to Nvidia, don't use their installer.
i don't use the catalyst installer i use the ubuntu/kubuntu package based installer.