HDMI stopped working on a Mac mini dual screens

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HDMI stopped working on a Mac mini dual screens

Hey guys, I have a Mac mini with two screens. One is with the HDMI port and the other one is with a HDMI/USB-C adaptor. It worked for a few weeks with dual screens and suddenly, the HDMI port stopped working. I have changed the cable, tested every possibilities around and yes the monitor connected with the HDMI port is working fine with the HDMI/USB-C adaptor as well. I've been searching over the net and couldn't find answers to fix it.

Is there anyone out here with a solution?

If the HDMI port is dead, can I buy an other HDMI/USB-C adaptor to connect the 2nd screen?

Thanks! Merci!

Dan

Posted on Jun 21, 2021 9:13 AM

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Answer 1

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den.thed

Level 10

82,036 points

Jun 21, 2021 12:21 PM in response to Mirliton

What model is this Mac Mini?

The 2020 M1 model only supports 1 display on it's USB-C ports.

The 2018/2020 Intel model supports 2 displays staggered on it's USB-C ports.

see > https://support.apple.com/guide/mac-mini/connect-a-display-apd8e4fbbb97/mac

As for the none working HDMI port?

I would first try a Premium Certified HDMI cable.

Then the steps at > https://support.apple.com/en-us/HT201177try

If those do not help, then contact Apple Support at > https://support.apple.com/contact

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Answer 2

Mirliton Author

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4 points

Jun 21, 2021 9:27 AM in response to Mirliton

When I said: "... and yes the monitor connected with the HDMI port is working fine", I meant the monitor, I have plugged it with the HDMI/usb-c adaptor as well, not in the HDMI port to test it.

:0)

Dan

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Answer 3

Mirliton Author

Level 1

4 points

Jun 26, 2021 11:01 AM in response to den.thed

I've purchased the Belkin adaptor and it didn't work unfortunately. I have tried all combination with the Bus 1 and Bus 2 as suggested, no luck..

It's the kids computer and it does not have much in it. I have a 5T external storage drive plugged in. So I have a Time Machine running for this computer.

Should I try a full reset?

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Answer 4

Mirliton Author

Level 1

4 points

Jun 21, 2021 12:31 PM in response to den.thed

Thanks for the infos!

2018

Processor 3,6 GHz intel Core i3

8 Go 2667 MHz DDR4

Intel UHD Graphics 630 1536 Mo

I’ll purchase an other adaptor then.

Thanks!

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Answer 5

den.thed

Level 10

82,036 points

Jun 21, 2021 12:38 PM in response to Mirliton

You're welcome.

Yes you can run both staggered on the USB-C ports. One on Bus 0 and one on Bus 1.

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HDMI stopped working on a Mac mini dual screens

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