after 4 hours of endless attempts at trying dozens of people's tutorials, i finally was able to install the amd catalyst drivers on my sony vaio vpcse ( Radeon HD 6600M/6700M/7600M Series ) using a ppa and some additional necessary tasks. here's what i did:
open a terminal
first uninstall any fglrx drivers that are installed:
sudo sh /usr/share/ati/fglrx-uninstall.sh
sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*
(if it's not installed or the sh script isn't there, then don't worry)
install the fglrx ppa:
sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install fglrx
check if this folder exists:
ls /usr/lib64
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DO ONE OF THE FOLLOWING (A or B)
A. if /usr/lib64 doesn't exist, run this:
sudo mkdir /usr/lib64
sudo mkdir /usr/lib64/fglrx
sudo cp -dR /usr/lib/fglrx/* /usr/lib64/fglrx
B. if /usr/lib64 does exist, run this:
sudo mkdir /usr/lib64/fglrx
sudo cp -dR /usr/lib/fglrx/* /usr/lib64/fglrx
the flags -dR mean to copy all files, directories and symlinks, exactly as they are in the source folder you're copying from--everything gets preserved and you get an exact copy.
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sudo aticonfig --adapter=all --initial
reboot
you should be able to login but unity will probably not work
open a terminal
GET UNITY TO WORK (i think this is the right order, IIRC)
gsettings reset org.compiz.core:/org/compiz/profiles/unity/plugins/core/ active-plugins
dconf reset -f /org/compiz/ && setsid unity
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