I currently have a Radeon HD 5750 graphics card and an M3N78-PRO motherboard. I use both outputs of my graphics card for a 2 screen display. I use
xrandr at boot to set up my two screens.
However, I was wondering if (1) would it be possible to attach a third monitor to the HDMI output on my motherboard and (2) if it is, how I can use
xrandr to set up the third monitor correctly.
Hardware-wise, I don't know if this is possible (I sure hope so). If it is possible, will there be any confusion at the OS level as to where to send the display (motherboard vs. graphics card)?