I recently installed Ubuntu 12.04, and the first thing that came up was the driver manager, which told me to install the drivers for my nvidia graphics card (I don't remember what it is).
I have a laptop and my screen is broken, so I must use an external monitor to see what is on my screen. After the install and restart, the external monitor is no longer detected. How can this be fixed? I know the display still works after the install because i can see the bottom corner of my laptop screen, there is just no signal going to the external monitor anymore.
When I revert back to before I installed the driver the external monitor will display again.