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Kirk Author

Level 1

38 points

Bluetooth periodically stalls for about 30 seconds

This is a 2018 Mac Mini running Catalina 10.15.4 (however this problem has existed through Mojave and Catalina updates going back for months.

I use a magic keyboard and magic trackpad, and sometimes bluetooth headphones of various makes and models including Bose, Apple, Beats.

At least once a day, sometimes more often, the computer's bluetooth seems to freeze, disconnecting all devices. About 20-30 seconds later, all the devices reconnect and I'm back in business.

I've tried most of the tricks I know of, moving things around, changing thunderbolt cables that might interfere with bluetooth and so on. Also, there have been a number of SMC resets and so forth.

The Analytics data starts with this message

com.apple.message.domain: com.apple.assumes.failure
com.apple.message.signature: 2CCDADFD-EBCA-38D8-8B60-43B43136A69B:664541
com.apple.message.signature2: 0x7fc6a5c06d90
com.apple.message.signature3: systemstats
com.apple.message.summarize: YES
SenderMachUUID: 2CCDADFD-EBCA-38D8-8B60-43B43136A69B

Followed by a bunch of messages related to bluetooth devices connecting. Such as

com.apple.message.domain: com.apple.bluetooth.connect
com.apple.message.host: 05AC007B
com.apple.message.process: kernel_task
com.apple.message.device: 004C026C
com.apple.message.uuid: 0x0000
com.apple.message.rssi: -17
com.apple.message.direction: Incoming
com.apple.message.pairing: SSP
com.apple.message.rate: EDR
com.apple.message.sco: None
SenderMachUUID: 0ADF5F33-3868-34F5-91B1-C94AFD91F5D3

Anyone else seeing anything similar? Any known solutions?

Mac mini, macOS 10.15

Posted on Apr 11, 2020 5:55 AM

Top-ranking reply

den.thed

Level 10

82,594 points

Posted on Apr 11, 2020 7:20 AM

Because you have TB3/USB-C drives and/or other devices in the area,

see > https://support.apple.com/en-us/HT201542

Try moving the TB3/USB-C devices to the opposite side or behind the Mac Mini away from your Bluetooth devices. If you can isolate a single drive or device that is causing the problem, them try replacing it’s cable with a thicker better shielded cable. You may also want to consider looking for a USB hub that has a thicker better shielded cable to plug those devices into. Also keep in mind that the wireless antenna is on the bottom cover of the Mac Mini and that you might have better results standing the Mac Mini on it’s side.

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Bluetooth periodically stalls for about 30 seconds

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