Problem with mac's sound output

Recently, I have upgrade my mac to Yosemite. And then the problem comes along. I found that my mac always didn't output any sounds. After some searching, I found that in the sound panel of system preference, the sound output device always automatically changes to "Soundflower(64ch)". If I change it to "Internal Speaker", then the sound comes out. How the output device "Soundflower(2ch)" and "Soundflower(64ch)" come from? And why the sound output device automatically changes to "Soundflower(64ch)" every time when I plug in an earphone or restart my mac?

MacBook Pro, OS X Yosemite (10.10)

Posted on Oct 31, 2014 6:13 PM

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4 replies

Nov 14, 2014 6:16 AM in response to tosouth

Try this, go to Users/Library/Preferences folder. navigate down to com.apple.systemsound.plist. Remove it from the folder to the desktop.

Now go to System Preferences/ Sound and input the preferences you want for your sound output and input etc. This creates a new .plist in your Users Library

Preference folder. Now either logout and then login or restart the computer. These new settings should now hold. If they do and you are happy then you can trash the older .plist file.


Good luck.

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Problem with mac's sound output

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