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Q: macOS Sierra - No Sound

I just updated to macOS Sierra. Now I have no sound what-so-ever.

 

Checked all the usual things (speakers, volume, settings, etc.).

 

Is there a macOS 10.12 sound driver or anything that I can reinstall?

Mac mini, iOS 10, null

Posted on Sep 20, 2016 4:30 PM

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Q: macOS Sierra - No Sound

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  • by lukefrombrno,

    lukefrombrno lukefrombrno Oct 2, 2016 12:44 PM in response to roberthazelby
    Level 1 (9 points)
    Mac OS X
    Oct 2, 2016 12:44 PM in response to roberthazelby

    Update of all updates of my replies.... :

     

    Sound comes off after restart OCCASIONALLY. Definitive solution (in my case) seems to be setting HDMI to "low quality". All other outputs can be left to whatever you choose. Only HDMI cannot be set to somewhat higher than 44.1 kHz / 16 bps. If you set current audio output to higher values then HDMI is set to the same after computer restart and as a result you get no sound again. That is the time to set the HDMI setting to "low quality" again to get the sound out of "headphones out". There seems to be sound output staying on if you keep all sound outputs on CD quality (44.1 kHz/16bps). Today I found that keeping LED monitor connected via HDMI on or off before starting the computer has influence on HDMI sound output settings after starting computer up.

     

    P.S.: Sorry if my english is crap.

  • by Michael Tchong,

    Michael Tchong Michael Tchong Oct 2, 2016 1:25 PM in response to Michael Tchong
    Level 1 (14 points)
    Oct 2, 2016 1:25 PM in response to Michael Tchong

    I reinstalled Mac Sierra and that solved the Facebook video call audio problem. Have no clue what happened.

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