This let me eliminate the cable, and I could focus on the monitor. I swapped the cable, but the issue remained. My display was still black when plugged into the MacBook, so I could now eliminate the Mac mini as a culprit.Īt this moment, I was left with two probable suspects: monitor and cable.įortunately, I had another HDMI cable. The same I saw when I connected the display to my laptop. In my case, when I tried to turn on and off the monitor by pressing the power button in front, I saw it blinking for a second and switching from analog to HDMI (my monitor has both VGA and HDMI inputs). In order to eliminate a problem with Mac mini, I decided to connect the external monitor to my MacBook Pro. In the case of Mac mini black screen, the issue could be with one of three main components: Mac mini itself, external monitor, and HDMI or USB-C cable (depending on the kind of monitor plugged into your computer). At this phase, you want to eliminate all unrelated causes for the problem. The first phase of any repair is troubleshooting. Go to System Preferences (System Settings on macOS Ventura and above).Full Disclosure Here… How to Fix Mac Mini Black Screen? I was hoping for a single cable solution.If you buy through affiliate links, we may earn a commission at no extra cost to you. Which is really a shame, because that cable worked connecting to a BMD Mini Recorder, but won't on this DeckLink. Anyone know a solution?Īlso PSA - USB-C to HDMI cables do NOT work for this solution, on any device I've tested.

I can connect an iPhone using a Lightning to HDMI adapter, and that works too. If I connect an iPad using the same USB-C to HDMI adapters as I tried on the M1 MacBook Air, those both work (tip to anyone reading this who needs it the iPad will determine that the card is an HDR device and default to an HDR output go to Settings > Display & Brightness > (connected monitor name) > HDR/SDR options). If I connect an older MacBook Pro (2015 era) with a built-in HDMI port, it works perfectly. However Desktop Video shows not signal received, and Media Express shows no signal.

It even knows that it's a Blackmagic device. It shows the second display in Display settings, it will allow me to change the resolution, mirror it, etc. If I connect an M1 MacBook Air to the DeckLink, using either an Apple or a Belkin USB-C to HDMI adapter, as far as the Mac is concerned, everything is fine. I just installed a DeckLink Quad HDMI Recorder in a Mac Pro, running Big Sur 11.1, and Desktop Video 12.0 (just released yesterday… nice timing).

Hdmi not working mac mini