I just install Ubuntu to my P.C. I started it up with both my screens plugged into my nVidia's dvi and vga ports and logged in, change the skin to classic gnome, because that's how it was when I last used Ubuntu (8.1), and both screens were working separately.
The trouble is that I got a notification saying there was nVidia drivers to be installed, so I install them and restart my P.C., and when I get back on only one of my screens is working and when I go into Displays (All Settings, Displays) it doesn't register my other screen at all. It calls my working screen "Laptop".
I've tried looking through several pages of Google but I see no answer. I did try to find the nvidia-settings to see if that had the answers but sadly I couldn't locate it.