M1 Mac Mini screens not waking up if left switched on.

[Fomalhaut]

Hi All,
I've had an annoying issue with my M1 Mini that I think started after installing 11.5.1.

If I leave the two external displays switched on, and the computer sleeps, then the screens don't wake up when the computer does.

The only way to get them to wake up is to disconnect at least one of them. One is connected directly via HDMI and the second one via a TB3 docks, using the DisplayPort output.

Disconnecting the dock is very annoying because I have disks and audio interfaces attached, so I have to do unsafe ejections and turn off speakers etc.

Has anyone else seen this problem?

I am aware there is an 11.5.2 update, but some users are reporting that this affects Thunderbolt outputs, only permitting video, but not data.

Any ideas?

Thanks!

 

[glenthompson]

Turn sleep off and just have the displays go dark if unused. It doesn’t use that much power and it’s not like a laptop where you need to conserve battery life.

 

[Kaptajn Haddock]

Had the same issue via HDMI, switched to thunderbolt/usb-c ports and never had an issue since.

 

[rpmurray]

This may be a known issue that Apple says will be fixed in a "future update". I'm thinking maybe as early as Monterey or the version that comes after it.

 

[Kaptajn Haddock]

This may be a known issue that Apple says will be fixed in a "future update". I'm thinking maybe as early as Monterey or the version that comes after it.

Spot on 🤣