Now I am dealing with Mac OSX. However I found sometimes this is no sound. People say it’s a bug. I have tried some methods. And found this goes for me every time.

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#!/bin/bash
sudo kextunload /System/Library/Extensions/AppleHDA.kext
sudo kextload /System/Library/Extensions/AppleHDA.kext

Put the code into a shell script and run the script whenever the issue occurs.

Others

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