Mac Mini M1 no HDMI output

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Level 1

12 points

Mac Mini M1 no HDMI output

I was using my FHD LG 24M45 monitor (1920*1080) with no issue for about 6 hours on my one day old Mac mini M1 through HDMI port. After I received an update for the system and restarted, no HDMI output since.

I bought a USB C to HDMI adapter and the monitor works fine. Just the HDMI connector has some problems.

Any idea how to restore it? Is it a software or a hardware problem?

I have seen similar problems on forums, but most of them used 4k or higher, or dual monitor. I am just using my peasant FHD one...

Mac mini, macOS 11.1

Posted on Feb 13, 2021 6:35 AM

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Answer 1

den.thed

Level 10

81,946 points

Feb 13, 2021 9:41 AM in response to Furkesz93

What macOS version are you currently on?

see > https://support.apple.com/en-us/HT201260

Yeah' it's been a mixed bag around here. Some folks report that 11.2 fixed the problem, while others are reporting the opposite.

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Answer 2

TheLittles

Level 10

195,352 points

Feb 28, 2021 11:00 PM in response to Furkesz93

Furkesz93 Said:

"Mac Mini M1 no HDMI output: [...]I have seen similar problems on forums, but most of them used 4k or higher, or dual monitor. I am just using my peasant""

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Report this to Apple:

Do your Part: This seems to be something that is catching on, becoming a common issue for many. So, report it to Apple. Apple Support may not get back to you directly, but the more feedback they receive on this, the more they will know that is occurring, and what needs to be fixed.

Go Here: Feedback - Mac mini - Apple
Select: "Bug Report" for the "Feedback Type"
Proceed from there as necessary

See a Reply in the Thread.

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Answer 3

den.thed

Level 10

81,946 points

Feb 13, 2021 8:24 AM in response to Furkesz93

Restart the M1 again and then try moving the HDMI cable back to the HDMI port.

If that doesn’t help, I would try connecting a second small HDTV or Display to the HDMI port with your current monitor still connect to the USB-C port.

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Answer 4

Furkesz93 Author

Level 1

12 points

Feb 13, 2021 9:48 AM in response to den.thed

I do use the 11.2, also this hdmi problem occured when i tried to install the 11.2.1. After restart, the display blacked out, and since it cant find any output source.

After i connected the hdmi with usb c, i reinstalled the whole system, alsó nő luck with that.

Right now i use the thing with usb c adapter.

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Answer 5

Feb 28, 2021 10:13 PM in response to Furkesz93

I had the exact same thing happen! Brand new m1 Mini that I was in process of setting up today. decided to run the update after playing with it for awhile and the HDMI output stopped working. Found this thread and luckily I had a usb-c to hdmi adapter on hand. Now the HDMI port won't output at all. Using an LG UN32650. Updated to 11.2.2 (Don't know what was installed when I first turned it on.) Nice going Apple!!

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