Ubuntu 9.04 Jaunty Ctrl+Alt+F1 Show Blank Screen

I was trying to change to a virtual terminal, but all I got was a black screen. I am using the latest Nvidia graphics drivers (proprietary).

To fix, I had to run the following command:

sudo modprobe vga16fb
 sudo modprobe fbcon

Then I was able to change to different tty virtual terminals using the keyboard shortcut. Ctrl+Alt+F7 to get back to graphical interface.
Source: http://ubuntuforums.org/showthread.php?t=679861