Have you ever had to run a debugger or see some real-time status information while the main screen is filled with a graphics window? Say you're writing a 3D first-person game or an immersive flight simulator, or making improvements to the X11 renderer, and you can't display one of your fancy terminal emulators at the moment. You want to print out a portion of the scene graph, or you need to single-step through some tricky logic. Solution: a second screen, often one which doesn't depend on cooperation from the GUI subsystems.
Though my example may not be the original poster's intention, there are are many good reasons to have a barebones display on a separate screen. There's a reason those terminal programs are called emulators-- they only strive for the ideal.
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So, if you don't care about the GUI subsystems and I guess anonymous doesn't care in this case if he or she is using an old-skool terminal, use your preferred multiple screen enabled GUI and multiple output enabled video card.
And if you do care, then I assume you have to do it low-level on your video card. Although I am unaware if anyone has done this before, but it seems logical to assume that someone has, if anonymous wants to do some research.
How can you feel when you're made of steel? I am made of steel. I am the Robot Tourist.
Robot Tourist, by Ten Benson
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