I have a laptop with a screen that is removed. I use an external monitor on it to be able to use it. I installed Linux Mint 17 on it, but when it boots it shows only the desktop background on the external monitor. I am guessing that the OS is showing the full desktop on what it thinks should be the main screen that now is removed and that my external monitor is getting a blank workspace. Is there a way I can change this via a terminal session through SSH for instance, or otherwise? Like I said, I can't use the graphical interface because the inbuilt screen is removed and the OS is trying to display the desktop there.