So I am trying to install the NVIDIA GPU Driver Version 346.35 (http://www.geforce.com/drivers/results/81252) for my GTX 970 and am running into a lot of issues. I have tried to run the file and get an error saying that I cannot install the driver while I am using X server. I have searched for a fix to this and have had no luck, as the most common response is to stop lighdm from the terminal, however; when I do this my screen goes black and won't allow me to pull up a terminal, or do anything. Help! I need 1080p!
I should probably mention that the driver installation I performed a couple weeks ago when I initially installed Ubuntu had worked, but apparently stopped working recently and I am not sure why. I think it was after I updated the driver on the Windows side or switched the port my monitor was plugged into, but I don't know enough to understand how either of these would affect my display on my Ubuntu OS.
sudo add-apt-repository ppa:xorg-edgers/ppa && sudo apt-get update
– david6 Jan 28 '15 at 05:27