4th Gen 2020 M1 Mac mini bluetooth issues with Magic Mouse2

You mean under Bluetooth Preferences->Advanced, deselect "Allow Bluetooth devices to wake this computer"

Yeah, been there, done that, doesn't make a difference.

But I'm happy that it works for you!

I wish people would realize that this is not an official Apple forum. If you want to express your anger at the company then please file a complaint with them. Meanwhile, some of us are reading each and everyone of these posts in order to try to help and if there is no helpful information it is just a burden on our time. I am not directing this at you or anyone in particular but in general.

Sorry for inconveniencing you and placing a burden on your time. I assumed that as I had to login using my Apple credentials to log on to a site with the domain apple.com that perhaps it was something to do with Apple.

Yes it has "something" to do with Apple but it is for users to provide support to each other regarding tech issues. It is not a forum to register complaints about the company. As I said, if you want to make your unhappiness known you need to do it in another venue.

Participating in Apple's Public Beta testing program is very attractive to those of us who have experienced serious functionality issues with our Macs, but there is, of course, one huge potential drawback to using this as a feedback mechanism.

Joining a Beta testing program could be dangerous for a user who depends on his or her Mac as their primary work machine. Loss of functionality and data loss are risks that not everyone is in a position to accept.

For those of us who can't afford a second Mac to use as a beta testing machine, what is the best way to report bugs? It still seems like that process is fairly opaque for most of us.

Yes. You are correct and I missed this obvious drawback. In my years of experience being a beta tester, I can state that if a person begins participation in the Public Beta testing after around beta 4-5, there is low probability of software bugs affecting real work flow. Typically, most of the major bugs have been addressed within the first 3 betas, with the subsequent betas ironing out the finer issues. As for a suitable alternative vehicle to report bugs to Apple, I do not personally know. But I have not googled this yet.

I just downloaded the software, turned it on, had a BT dropout, and have the same red error message updateChainPower Error: -3903.

Coincidence? I think not!

BTW, I'm using a Magic Keyboard 2 and a Magic Trackpad 2, not a Mouse, but my experience here has been the same as those who use the Magic Mouse 2.

I believe there's an error in your link for BT Explorer. It is in Additional Tools for Xcode v 11.4, but not in the link to v 12 you posted.

Here is the link that worked for me: Additional Tools for Xcode 11.4.dmg

Yes. The issue haven't been solved with the last update:

2021-01-26 11:04:16 +0000 Mode change 12 for handle: 0x0

2021-01-26 11:04:16 +0000 Handle: 0xC disconnected, reason: 0x13

Magic Mouse 2 disconnected

Magic Mouse 2 connected, handle: 0xD

2021-01-26 11:04:33 +0000 Mode change 13 for handle: 0x2

I wonder, what does "reason: 0x13" mean?

Should have waited. With last beta everything was working fine with Magic Mouse (battery) and unlock mac working. Now unlock mac stopped and keyboard extra characters started again. Had to turn it off and on to get the keyboard working right.

"I get that initially on startup with the Asus Bluetooth Dongle also, and yet it works. "

That's because it's probably still returning errors on the built-in Bluetooth. All I can tell you is there is a 100% correlation with my disconnects and others are reporting the same thing

Does anyone know what the number on the link quality graph means in bluetooth explorer? Between my keyboard and mouse one is rock solid at 250 the other floats around. When my watch connects it's quality sits at about 160. I thought this was a percentage based on all other images I have seen where there is a max of 100.

I am on 11.2 RC2

Installed it last night; first thing this morning, sat down at the mac mini, and within literally a minute, I had a disconnect/connect/disconnect/connect. So, yes, several of us have installed build 20D62, and still have the issue.

I posted the Bluetooth Explorer screen capture earlier today in the thread.

Good luck. I have the gun 1 magic keyboard and mouse and have varying results. I first moved to a USB wired connected Apple keyboard as the machine was unusable, I now use the Magic keyboard on a 2015 Mac Pro with no issues. The M1 Mac Mini seemed good with this setup, but just recently I had two days where the mouse would connect and then immediately disconnect, again making the system unusable.

However, touch wood, it seem ok again now.

I also have wake on bluetooth turned off, so only the keyboard will wake the system.

Another issue I have - is the monitor does not always come on and I have to reset the USBC cable. Note I have USBC to Display Port cable as my screen, while new, does not have USBC input.

I'm also using a USB-C to DisplayPort connection and experience the same occasional problem with the display not waking up. What mostly works for me in this case is pushing the on/off button so the monitor goes into standby mode and immediately switch it on again. I'm using Dell UltraSharp U2711 (2011). Apart from this I'm happy with the performance.