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xBWheat Author

Level 1

5 points

M1 Mac Mini has snowy display after waking

My m1 mac mini is connected via hdmi to a single samsung 1080p display. Often but not always, when I turn on the monitor in the morning after leaving it untouched for several hours I see a snowy screen at monitor start up. Sometimes the screen flashes green too.

My computer is not set to go to sleep. I remedy this by turning off the monitor or unplugging the hdmi and power cord and it quickly comes back to the expected display.

I took the latest update over the weekend so I'm still puzzled that this is still going on. Is there a fix?

Mac mini 2018 or later

Posted on Mar 9, 2021 10:44 AM

Top-ranking reply

hcsitas

Level 6

13,130 points

Posted on Mar 9, 2021 12:33 PM

How long is the cable? Replace with new 5 feet (1.2m) or less, preferably HDMI certified.

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M1 Mac Mini has snowy display after waking

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