Mac Mini M1 Will Not Wake Monitor After Sleep

Question

Level 1

6 points

Mac Mini M1 Will Not Wake Monitor After Sleep

Hi, I can see this question has been raised before but I cannot see the solution.

In summary, my MacMini M1 connected by USB C to an Eizo CS2731 often fails to connect or "wake up" the screen when booting or after sleep. The screen shows "no signal" and it is necessary to unplug and reconnect the cable to get it to work. Very irritating.

I have disabled Prevent Automatic Sleeping When the Display is Off (System settings/displays/advanced).

Is there a solution that anyone knows please?

Thanks...

Posted on Jul 6, 2023 12:55 AM

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Answer 1

Top-ranking reply

hcsitas

Level 6

12,848 points

Jul 12, 2023 5:40 PM in response to MG365

Try this:

choose HDMI for video using an HDMI cable not longer than 3 feet
connect the USB C cable from the monitor to the mini’s USB-A port using a C-A cable or adapter.

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Answer 2

MG365 Author

Level 1

6 points

Jul 12, 2023 12:22 PM in response to hcsitas

Hi, here are the screenshots of the settings applied. I am beginning to think there is a problem with the USB ports or the driver. I would have reset them but from Google, my silicon MacMini does the resets on start up.

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Answer 3

MG365 Author

Level 1

6 points

Jul 31, 2023 1:25 AM in response to hcsitas

Hi, just to let you know, the problem seems to be rectified. I think it was the port in the MacMini. When I switched to use the second port, it seems to be working properly. Confusingly, the first port is working ok for a remote drive so perhaps it is simply a dodgy connection or something like that. Anyway, thanks again for the advice and for getting me back on track!

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