4. Run AMDDRIVER3.15.sh in build_mod (Preferably in a terminal so you can see what's going on)
5. All done!
1. You need devx to compile. You need the headers to compile kernel modules.
2. This creates the folder in /lib/modules/fglrx/build_mod so you can manually compile the module.
3. I got these patches from Arch.
4. This script runs the patches, the make file, the install script and then aticonfig --initial, which sets up xorg.conf to use the new module. (I assume)