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 25, 2019 3:14 AM

Since the apple engineers won't do anything about this issue anytime soon, I found this trick helped me. I went to https://developer.apple.com/download/more and searched for additional tools on the search bar, and downloaded the latest xcode 10.2. In the folder Hardware look for bluetooth explorer and open it, it opens in the background so you need to search for it. Then open the Tools/Audio options tab, and select "Force use of aptx" box. Then I found the bluetooth doesn't drop after couple of mins.

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156 replies

Mar 12, 2020 1:55 AM in response to Santsches

This lack of reactivity from Apple on such a serious issue is absolutely UNACCEPTABLE!!

We use headphones for profesionnal TCs, to call our family, to watch movies..My Mac loses 50% of its value if I cannot stably connect my headphones!!

I have tried different Bose headphones and speakers, all connected via Bluetooth. The connection goes and come randomly! When I did the reset process it worked for a few hours and then the problem reoccured.


Ignoring this issue is a very low shot from Apple. I am super disappointed!

Apr 14, 2020 10:19 PM in response to AskAgain

I experience the same problem and it's super annoying especially nowadays, we all have to use our headphones intensively for work-from-home interactions. It's disappointing when I find out that others have reported this issue for half a year and Apple has not taken any action. Too bad we're too dependent on Apple and there's no better option from my perspective.


However, with that being said, I have developed a mindset that I'll switch as soon as possible when there's a better brand, even though the possibility is extremely limited.

Apr 27, 2020 5:39 PM in response to AskAgain

I have the same problem. With Bose 700 headphones and AirPods. The problem first happened after I started using Bose 700. I do not remember this happening with AirPods before (I've been using them for ~2 years).


What I tried: removing bluetooth profiles and reseting NVRAM (the latter seems to help temporarily - for a day or two).

My device: MBP 2018


Could you fix it, please. My music suddenly switches in the middle of a track and it is so uncomfortable, especially if my Macbook internal speakers volume is high and there're people around =(

Jul 17, 2020 10:16 AM in response to AskAgain

I have updated to 10.15.6 — MacBook Air audio is not routing through bluetooth to my devices: Plantronics headphones or TaoTronics receiver. It actually WAS working with 10.15.5; I updated 3 days ago and audio has not routed through bluetooth since — it pairs with the device (shows connection in Bluetooth Preferences), it shows as being routed through the device in Audio Preferences, but the audio only comes out of the internal speakers. What the what?!

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 !

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Catalina bluetooth issues - audio output switches intermittently

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