Mac Mini M1 - Bluetooth Drops & Wake Thunderbolt Display

Hello, I have some bad news for you regarding the LED Cinema Display problem. I have the same monitor and chatted with Apple support. They pointed me to this technical spec page about the Mac mini. It shows that the Mini DisplayPort is not supported on the Mac mini. I am constantly unplugging and plugging back in the monitor.

I am also having a similar problem, and wanted to add my details. I don't know if Apple pays attention to this or not, but here goes.

With a default configuration of Energy Saver and Screen Saver, my Mac mini M1 will sometimes, and quite frequently, go to sleep and not wake up when using the Magic Keyboard and Trackpad via Bluetooth. I've seen versions of this where:

• The screen simply will not wake and displays black.
• The screensaver is on or comes on, but there is no way to bring up a login prompt. I can see the mouse cursor moving, but nothing is responsive

In these cases, I've tried to plug my keyboard and trackpad into the Mac mini directly (instead of Bluetooth), and this has no effect. The only way I've been able to recover it is by pressing the power button on the Mac, which seems to sometimes wake it up. My wife had to actually turn it off once to get it back.

System details:

• Mac mini M1 8GB
• Using Caldigit TS3 Dock for the display connection. USB-C/Thunderbolt over to the dock, and then display port to the monitor. Firmware is updated with Firmware version 44.1
• Dell P2715Q Display
• USB webcam is coming through the dock (no issues to report)
• USB microphone is coming through the dock (no issues to report)

I just got my old Apple Cinema HD (23") display working by using an Apple DVI to HDMI adapter to a Apple HDMI to USB-C adapter, but I'm now experiencing the display not waking from sleep either. Keystrokes or mouse movement doesn't wake the screen. Grr.

Similar issue here. I have a 8GB ram + 512 GB HDD Mac Mini M1. The screen does not wake sometimes. I am using Logitech Unifying Receiver for my keyboard/mouse so my case seems not a Bluetooth issue. I have to use the power button at the back of the machine to force reboot it.

My workaround was to adjust Energy Saver to not let it sleep for several hours if I knew I’d be returning to the machine. Even then it’s still a little wonky trying to get screensaver to show me login screen. Fingers crossed there’s a supplemental update soon as this is going to get old real quick.

Try this, instead of putting the Mini to sleep, select Lock Screen

instead. After some time the image will go black (preventing burn-in)

but should be re-enabled by mouse or keyboard and then log in again.

As for sleeping the new M1 Mini at all, it has such a reduced power

consumption compared to the Intel Minis that it really

isn't all that necessary. Also, using the lock screen approach,

you are instantly back where you left things instead of waiting for

the Mini to "wake up".

I was just using what Apple sets as default out of the box for Energy Saver and adjusted to 3 hours.

I will try the Lock Screen approach and see if that works as a workaround, just one of those things don't always remember to Lock Screen if you walk away.

Regardless, it's still an issue Apple will have to address.

Also, the Lock Screen may help with Wake issues but it doesn't resolve the Bluetooth Drops which are so frustrating. Just had another one where keyboard and trackpad both stop working. They work if you plug in the lightning cable to re-establish connection but once you unplug cable they stop working. Requires a restart to get them stable again.

I don't have any data points concerning the Bluetooth drops - my keyboard and mouse are wired.

Last night I set the Energy Saver pref to turn the display off after 30 minutes, but I checked the "Prevent computer from sleeping automatically..." setting.

This morning when I hit my space bar the monitor woke properly. I then forced the monitor to sleep, walked a way for a bit, and returned and the monitor woke properly again.

I should note that I'm using the Aerial screensaver, but that doesn't seem to be effecting anything one way or another.

Sounds like you have an Apple Cinema Display, NOT a Thunderbolt Display, those two may look the same on the exterior, but they are NOT the same. I haven't seen videos or photos of it yet, but people with them are saying that the 27" THUNDERBOLT DISPLAY does indeed work with M1 Macs. The only thing you need is the Thunderbolt 3 to Thunderbolt 2 adapter from Apple.

I have the same issues with my M1 Mac mini: significant Bluetooth problems – mouse, keyboard and AirPods all stuttering – and it sometimes won't wake my LG Ultrafine 4K display. The HDMI display I also have connected works fine on wake.