sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*
sudo apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon
sudo apt-get install xserver-xorg-video-ati
sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
sudo rm -rf /etc/ati
sudo apt-get install build-essential cdbs dh-make dkms execstack dh-modaliases fakeroot libqtgui4
sudo apt-get install ia32-libs-multiarch:i386 lib32gcc1 libc6-i386
sudo apt-get install ia32-libs
cd /usr ; sudo ln -svT lib /usr/lib64
chmod +x amd-driver-installer-8.98-x86.x86_64.run
sudo sh ./amd-driver-installer-8.98-x86.x86_64.run --buildpkg Ubuntu/precise
sudo dpkg -i fglrx*.deb
sudo reboot