I have a desktop system in which I just spent a small fortune replacing the motherboard and graphics card because I thought they were broken, and after doing so, I still have the same problem. The second monitor, the one plugged into the DVI connector is not detected at all. I have read dozens of posts with similar problems, but none of the solutions have worked for me. I have run dual monitors on Ubuntu almost since the beginning of Ubuntu with no problem.
Anticipating questions back.. yes, I have the correct sources installed and the Nvidia 304 driver installed after installing the sources and headers.
I am at a loss, as this is my main work machine, I NEED two monitors, and I have been trying to solve this for over 24 hours (except for the 4 hours I was asleep). Any one got any clues at all?