I'm trying to use an HDMI -> DVI cable with an M1 Mac mini and a display with DVI. The Mac can see that the display is connected but the screen stays black.

I've tried:

• Using the same cable with an older Mac with HDMI out. That works, so the cable seems good and the display works with this conversion.
• Using a different HDMI display with the M1 Mac with a plain HDMI cable. That works, so the Mac's HDMI port seems good.

This is the cable:

This is the display:

A couple of possibilities I've found that haven't helped:

• Another post suggested that the problem has to do with HDCP. For what it's worth the display's manual says it supports "DVI (HDCP)".
• Other sources mentioned DVI-A vs. DVI-D being a problem. The display's manual clarifies that it's DVI-D, so I think I'm OK there.

Does anyone have other suggestions? Thanks.

5

1 Answer

This ended up being a bug in macOS 11.1. The release notes for 11.2 read, in part

macOS Big Sur 11.2 improves Bluetooth reliability and fixes the following issues:

• External displays may show a black screen when connected to a Mac mini (M1, 2020) using an HDMI to DVI converter

I upgraded to 11.2 and it works.

1

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