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Catalina bluetooth issues - audio output switches intermittently

After upgrading to Catalina, my Macbook Air has audio output issues when the Bluetooth is connected to Sony WH-1000MX2 headphones. Suddenly, the audio connection switches to the internal speakers and the output can't be changed. The immediate solution is to turn off/on the bluetooth on the Macbook and reconnect the headphones. But after a while the problem reoccurs.


I have tried to problem solve by the following processes:


  1. Accessing the debug function (click the the bluetooth icon in the menu bar whilst pressing alt+shift). Remove bluetooth devices. Reset the Bluetooth module. Delete the bluetooth plist files in the library (/Library/Preferences + ~/Library/Preferences/ByHost ). Restart Macbook. Reconnect the device.
  2. Reinstalling Mac OS Catalina


The actions mentioned above does not solve the problem.


Any help will be appreciated. Thanks.

MacBook Air

Posted on Oct 14, 2019 6:47 AM

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Posted on Nov 15, 2019 8:49 AM

Here what I found running some debugging with Bluetooth explorer.

Actually the BT device work using the AAC codec until at a certain point the transfer of the audio information going down as you can see on the picture here... This means that it is something related to the audio codec over Bluetooth. There is a bug there. Maybe this can help engineers to solve the problem! :)



So for the moment what I experimented is that after reboot the device works until sleep mode is activated. After no way to have a working Bluetooth audio device. Of course this is not the proper way to run the device :-)


Bests

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156 replies

Jul 18, 2020 10:27 AM in response to jose68

Even I have a case running with them. Tried all the things that they mentioned. Told them the issue is related is codec. Gave them all the required logs. They escalated to engineering internally and then mentioned that engineering doesn't have timeline. They can't give me bug number or at minimum confirm if this is bug. They can't escalate helping me to speak with someone in management.


Tweeted to Apple support, Apple and Tim Cook about the worst experience we can get and they don't reply. Customers are so much of less importance to Apple.


So to summarise you just get middle finger from Apple and nothing else.

Aug 19, 2020 3:15 PM in response to AskAgain

i have the same version of catalina --5-- on a macbook pro and a imac 27 ... bose mini works on the desktop but fails on macbook - even though it connects and all that, but drops after a minute or less...havent tried other devices yet... Thanks to everyone for researching this problem... apple is in no hurry to resolve it, it seems Maybe in the NEXT thrilling OS !

Oct 4, 2020 4:28 AM in response to jose68

I have this issue too with Airpods PRO, if I try to connect those after I wake my macbook from sleep the audio is not coming through and my magic trackpad starts acting erratically... to fix it the only workaround I've found is to restart the laptop.

I've contact the support and they came back to me with the usual useless reply to reset NVRAM, NPRAM ecc... I've also tried all this fixes but it didn't work...


It's a shame Apple is ignoring this issue with a 3000€ laptop... I've chosen Apple to have stable devices but this really have me questioning the quality of apple products.

Catalina bluetooth issues - audio output switches intermittently

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