How do I find Bluetooth connections in Mac system logs

Question

I've lost my BT earphones, and am trying to determine the last time they were connected to my macbook, to narrow the time window and help the search.

How can I learn this from system logs?

I opened Console.app, and found numerous mentions of connections to BT devices, of the format:

com.apple.message.domain: com.apple.bluetooth.connect com.apple.message.host: 05AC8290 com.apple.message.process: blued com.apple.message.device: Unknown Name com.apple.message.uuid: 0x001F com.apple.message.direction: Outgoing com.apple.message.rssi: 127 com.apple.message.pairing: LE com.apple.message.rate: LE com.apple.message.sco: LE SenderMachUUID: 557AF7B3-7829-380F-83D7-684B2004E540

How do I determine which ones are connections to my BT earphones (not my smartphone)? I know the MAC addresses of both the devices that connect to this computer, but they don't seem to be mentioned in the logs.

Answer 1

Hold shift and option buttons at the same time and click on the Bluetooth icon:

Click on the Debug and then click on Enable Bluetooth logging. Then in the magnifier type "Console". In the search area, search for Bluetooth. You should be able to see the logs: