M1 Mac Mini, Displays wont turn on after wake from sleep

I connected my Mac mini M1 with an MSI Mag321Curv. I got the same problem using USBC to USBC where the Monitor does not wake up from sleep. I switched to HDMI to HDMI and the problem became less in frequency. Additionally, there seems to be no IOS driver for MSI and the MAC shows the Monitor as "No Name". Anyone has this problem? Thanks.

I had the same thing happen with my new MBPro M1: an external monitor did not awaken.

Required unplugging everything (including power) and a shutdown/boot.

No, you can have it turned off by timer, but prevent the mini from sleeping.

When you have two monitors but only one wakes up from sleep:

System Preferences / Mission Control / De-Select “Displays have separate Spaces” / Log Out / Log In

Disable sleep on the Mac does not prevent displays from sleeping. Do it, it’s n/a for M1s and all Macs post 2018. Enabling it = only trouble. Enjoy...

Support sleep duh. Smell the coffee, it’s old tech, unnecessary. Disable is the solution.

Well, ok, good luck! Until those expectations come true (which could be never) shut or disable sleep.

Like I mentioned I have mine waking up fine now but it would not with direct HDMI - I use Display Port cable from a CalDigit hub. Not a configuration everyone will have I know but it is working.

After the Mac wakes from sleep the monitor will not turn on or wake. I found also the solution: moving the mouse as you do it when you cannot see the pointer will open the display.

In System Preferences > Displays, click the Arrangement tab and drag the menu bar to the other display.

It’s very simple: disable sleep on the mini, use one HDMI monitor and wait it out for the second one until newer monitors with dongle-proof USB 4s hit the market (or buy an expensive TB3 monitor). Enjoy...

I think you may be missing the underlying issue here. There are people replying to the original post with issues on other M1 Macs, not just the mini. Clearly there's an issue here that's not specific to the Mini and has not been an issue with the same monitors and adapters on non-M1 macs.

Similar problem. I run two Dell 4k monitors on a new M1 Mini. The primary monitor w/dock will behave as expected after sleep or upon first opening in the morning. The second monitor has to be shut off and on to wake in the morning and, also, after some period of time (I haven't experimented) when in sleep. It will wake from sleep if it hasn't been in for very long. Initially, the second monitor couldn't detect an image due to my 3rd party HDMI to USB-C adapter not being supported (not a problem for my 2019 mini). I purchased the Apple Multi adapter to solve the undetected image problem but now have the apparent sleep problem...

Oh gosh, don't get me started on the bluetooth lol. I have the Magic Tracpad, Keyboard, and mouse... the BT on those drop in and out... bluetooth speakers (Logitech) as well. I was using a USB-C to display port adapter on my monitor. I went from the HDMI port on the MacMini M1 to the monitor... seems like it is working again (waking from sleep)... for now.

Across a variety of forums, a common thread seems to be problems with USB-C to DisplayPort. Even though I have a USB-C capable monitor, I went with HDMI to HDMI so I could keep the USB-C open for other uses and the HDMI handles 4k 60hz, so why not.

Regarding Bluetooth issues, I have seen it mentioned that problems were averted by unplugging everything from the USB-A ports. As if interference is resulting from badly shielded connectors, cables, etc. Can’t speak to that solution other than to say that I have nothing plugged into either of my two ports and I am having ( knock on wood) zero issues with Bluetooth. So, maybe there is something to it.