I'm another new user here. I've recently got my hands on an RX 550 and the ride has been a bit bumpy.
The issue I've been getting is whenever I boot up with 2 displays connected or when I connect a 2nd display and just sitting at desktop, 1 screen go black(DVI port). I can't get a signal or image.
Getting back to desktop with only 1 monitor connected(HDMI),I don't get any message about the problem.