[Ubuntu Chicago] Studebnt video issue

[Patrick Green]

One of my students, who I am proud to say is using Ubuntu, kinda made a
mistake.  He was experimenting with the video cable to get his computer to
either run on the tv or to get the computer to play tv...I am not sure
which.

Anyway, using the s video cable he hooked the laptop to the tv and changed
the setting through the GNOME GUI to accept the tv as the main monitor.
Now, the screen is blank and only boots when the video cable is hooked up to
his laptop.

He is on another student's laptop downloading and burning a copy of ubuntu
so he can run it live.  Once he gets in, I have NO CLUE what to tell him to
enter to change the monitor video settings back to the laptop
screen...thoughts?

Thank you in advance.
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