2MuchMark

On a tower PC you can have dual video cards or video cards with quad outputs like I have on my PC already. As I said in my OP, I'm trying to do this with iMacs, not a PC, and not with a Mac Pro. An iMac has its monitor and computer built into the same cabinet, and has a single video port out the back. You can connect additional monitors to it using a USB to Display Port cable of some kind but I don't have one. And besides I want to do this wirelessly or through the existing network.



Sort of but not quite. I'll try to explain in more detail.

On my current setup, I have 2 x iMacs (A and B) connected to each other via the display port. Each one can act as an extended desktop to the other IMac (A to B, and B to A). I can mouse and drag across the entire extended desktop between both monitors of course.

I have another Mac (C), itself connected to a secondary monitor (D), forming its own extended desktop. (C to D)

So now what I want to do is make 1 giant desktop across all 4 monitors, A,B, C, D.

The catch is: This isn't 1 computer and 4 monitors (Babaganoosh), this is 3 computers and 4 monitors.

Next catch, is that the 3rd computer (C) is not connected to the display port of the other 2 computers (A & B). So to make it work, I have to extend the desktop wirelessly or through the network.

So the good part is, I got it all to work. Each of the 3 computers can extend its desktop across all of the 4 monitors. It works well, BUT -

Here is the last catch:

In order to see monitor C or D from Computer A, a "virtual" monitor appears on Monitor A, which is in the way of whatever else I want to see. I can still use it and it still works, but its not as natural as simply mousing over to monitors C and D.

I feel like there is a simple config setting somewhere that I am missing, but I can't find it.

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