sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri sudo apt-get remove --purge nvidia-* sudo apt-get install nvidia-current-updates sudo rm /etc/X11/xorg.conf echo 'nouveau' | sudo tee -a /etc/modules sudo reboot
sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri current- updates
sudo apt-get remove --purge nvidia-*
sudo apt-get install nvidia-
sudo rm /etc/X11/xorg.conf
echo 'nouveau' | sudo tee -a /etc/modules
sudo reboot