Macbook Air Sound Muted

Discussion in 'MacBook Air' started by Daniel2424, Aug 26, 2016.

  1. Daniel2424 macrumors newbie

    Joined:
    Aug 26, 2016
    #1
    Hi,
    My sound is muted on my new Macbook Air. I have tried to turn it up using buttons and also using headphones. In the top column the sound icon is grey and when I go into system preferences the "muted" button is checked and grey and I am also unable to un-check the box. I have included pictures. HELP!!! Screen Shot 2016-08-26 at 1.31.52 PM.png Screen Shot 2016-08-26 at 1.32.32 PM.png
    --- Post Merged, Aug 26, 2016 ---
    I have added another picture of what happens when I try to turn up the volume from the keyboard controls. Please Help. Thanks. Screen Shot 2016-08-26 at 10.16.56 PM.png
     
  2. cruisin macrumors 6502a

    cruisin

    Joined:
    Apr 1, 2014
    Location:
    Canada
    #2
    A restart solves this issue. Sometimes pressing the mute button on the keyboard a few times also fixes it.
     
  3. Daniel2424 thread starter macrumors newbie

    Joined:
    Aug 26, 2016
  4. macrumorsforumuser macrumors newbie

    Joined:
    Mar 20, 2017
    #4
    Hey,

    my MBA happens to have the same issue, though restarting or hitting the mute key several times doesn't help. Would be great if someone had another hint how to resolve the issue. Thanks.
     
  5. ApfelKuchen macrumors 68000

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #5
    In System Preferences > Sound > Output > Select a device for sound output - what device is selected? It ought to be "Internal Speakers Built-in"
     
  6. cruisin macrumors 6502a

    cruisin

    Joined:
    Apr 1, 2014
    Location:
    Canada
    #6
    I found something that occasionally works for me: https://discussions.apple.com/thread/4202694?start=0
    Or as a one line command:
    Code:
    sudo chown -R _coreaudiod:admin /Library/Preferences/Audio && sudo update_dyld_shared_cache -force && sudo killall coreaudiod
    This will take a bit to run (about 30 seconds) and then the audio will come back but the keyboard buttons will not work for the first few minutes.

    Or you can try to reset the NVRAM and SMC. Some people say it helps, but it did nothing for me.
     

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