I turned off the wrong display in XFCE

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http://forums.fedoraforum.org – Hi everyone, The background: I have a computer that has two video ports, HDMI and DVI. I'm running F16 with XFCE. The initial problem was the login screen was showing up on the HDMI display even though I didn't have a monitor hooked up to it. I was staring at the default background on the only monitor I had hooked up (DVI). So I plugged an additional monitor to the HDMI port (running dual montiors) and was then able to log in. My goal was to deactivate the HDMI port and use a single desktop on the DVI port. I went into display settings, there were two options to check for the DVI dis (HowTos)