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priyamraj

macrumors newbie
Original poster
Jun 1, 2021
1
0
Multiverse (Use Code PRI)
Hello everyone,


My past few days have been really frustration with the issues I'm facing with my MacBook Air 2019 128 GB Variant. I recently installed Big Sur and ever since that time my MacBook loses audio all of a sudden while working, the only way around to get rid of it is shutting down the lid and pulling it back, that fixes it for a few moments but that is it. The laptop just keeps losing the audio.



I have also tried:

  • Resetting the PMC
  • Resetting the NVRAM
  • Reinstalling macOS
  • Reinstalling factory macOS
  • Restarting the MacBook
  • Uninstalling almost all the Apps that I've installed
  • Cleaning and removing any dust in the Headphone jack (I never use it)
  • Disabling Bluetooth (I normally use AirPods Pro)




None of that helped, when I installed Catalina back to this thing it did help for a split second, it was a bit better but again it just won't stop losing audio. The other way I fix this sometimes is by going to the Terminal and killing the CoreAudio service which restarts it and then the audio is back for a few seconds. There are literally no other issues on the Laptop, this is it and it all started after installing Big Sur and although I tried to reverse it, it did not help. I cannot visit any Apple Service Center as of right now but I would really appreciate it if you can help.





Also, I tried to see logs for the CoreAudio service on Terminal and got this:

HALS_Device::_GetCombinedVolumeScalar: client 49 (pid 132) is not present and has a combined volume scalar is 1.000000
 
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