Ubuntu Help

I have recently installed Ubuntu 12.04 on two Dell Vostro desktops. The first intallation is on the computer we've been using as a media server/browsing computer. The installation went great. The default applications mostly met our needs and I was able to easily download applications to plug any holes. The only remotely tricky part was getting Minecraft and Netflix working, but even that was pretty easy after reading through the documentation.

My main work computer was another story. I use two monitors and getting the Ubuntu GUI to work on both has been impossible to this point. The odd thing is that I can run Ubuntu 12.04 on both monitors, but one has the graphical interface and one is text only. I can toggle between them using CTRL-ALT-F1 and CTRL-ALT-F7. I can't have both the tty and the GUI open at the same time.

There are two display adapters.

1) VGA compatible controller: Matrox Graphics, Inc. MGA 2064W [Millennium] (rev 01) Works fine

2) Display controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02)

The only thing I can think of is that the 2nd onboard graphics controller does not support the Ubuntu GUI which I find odd. As far as I can tell, and I am new to the whole world of figuring out drivers, the drivers are up to date and correct. I could certainly be wrong about it.