Hi, I just got two S27D590 which have the following input ports:
1 x analog (VGA connector)
1 x HDMI
1 x Displayport
I connect the 1st monitor via HDMI which works fine.
I connected the 2nd monitor from DVI to the displayport like this: DVI -> DIV-MiniDisplayport -> MiniDisplayport-Displayport adapter
But I don't get any signal. I tried to use the DVI output on the slot with the HDMI / Displayport and the one on the separate slot. No luck. The monitor is not catching a signal.
System preferences show only one monitor as well. I'm running Yosemite on a MacPro 2008 early (3,1).
Are there are any special restrictions on the ports of the GTX 680 Mac Edition card? Can I only combine 2 x DVI or HDMI & Displayport? I understood that I could connect up to 4 monitors to the card. Which implies that I can use all output ports.