Xserver nvidia arrangement for 10.10
It is most likely that you have actually created the equipment to make use of the back-up nouvou or vga vehicle drivers if your nvidia arrangement fell short.
You require to reassert the old xorg arrangement :
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak sudo cp /etc/X11/xorg.conf.nvidia /etc/X11/xorg.conf
Then reactivate your computer system to work. If you do not address this concern wit this, please upload your arrangement and also your dmesg log. Additionally take into consideration uploading a bug record regarding why you required to set up nvidia in such a means regarding possibly make it fall short.