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Brandon Bowlby

macrumors newbie
Original poster
Oct 4, 2020
3
1
I have a 2019 Macbook Pro. I also have 2 2014 iMacs. I have them both plugged into my Macbook Pro.
I am able to get both iMacs to work in "target display mode" on their own with my Macbook Pro.
But when I put both in "target display mode" one of them always shows a blank fully black screen.

When I go to my display settings all screen show up as registering. I am able to move them around and change resolution. However, the 3rd screen is just black and unusable.

Any advise?
 
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