[ubuntu] Activating nouveau drivers?

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http://ubuntuforums.org – So I was recently trying to fix some minor video problems I was having on 12.04, and in the process I foolishly installed an NVIDIA driver. Previously I was using the nouveau driver, and loving every minute of it, but now I can't seem to turn it back on. It shows up in the additional drivers window, but it says "Active, but not in use." and I have no idea how to make it "in use". Output of jockey-text -l | grep -i nvidia Code: kmod:nouveau - nVidia Riva/TNT/GeForce (Free, Enabled, Not in use) kmod:nvidia_304 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Hardware)