Previous 1 2 3 4 Next 54 Replies Latest reply: Jan 31, 2016 7:55 PM by empie
AKC87 Level 1 (0 points)

So while at a gig last night with my band, we ran a video from my computer to screens on stage. The chain looked like so:

 

MBP -> Mini-DisplayPort -> MDP/HDMI converter -> 4-way HDMI Splitter -> LCD Monitors

 

Now sometime during takedown, someone just decided to unplug something from my computer without consulting me or taking any proper precautions. Now my audio is stuck on Digital Output (type digital optical out).

 

Here's what I know, and what I've tried.

 

There is NO red light coming from my line out. Please don't bother suggesting the micro-switch fix.

I have reset the PRAM/NVRAM

I have killed coreaudio a few times with no luck

I have deleted without progress:

     1) com.apple.audio.DeviceSettings.plist

     2) com.apple.audio.SystemSettings.plist

     3) com.apple.systemsound.plist

I have restarted my computer

I have attempted to use Audio MIDI Setup

I have googled:

     1) com.apple.systemsound

     2) macbook pro stuck on digital out audio no red light

     3) force resetting to internal audio osx

     4) force reset coreaudio osx

     5) com.apple.audio.DeviceSettings.plist

     6) resetting audio output osx

     7) osx audio stuck on digital out

     8) osx audio stuck on digital out after hdmi

     9) osx audio stuck on hdmi

 

 

Now that I've most likely narrowed the issue down, can someone tell me what I HAVEN'T done?


MacBook Pro (15-inch Mid 2010), Mac OS X (10.6.8)
  • dominic23 Level 8 (37,797 points)

    The below linked article is from Apple.

     

    http://support.apple.com/kb/TS1574

     

    PRAM is already Reset.

     

    May be Reset SMC will help.

     

    http://support.apple.com/kb/HT3964

     

    Best.

  • AKC87 Level 1 (0 points)

    Let's go ahead and add "reset SMC" to the tried and failed list...

     

    Thanks anyway, next?

  • AKC87 Level 1 (0 points)

    Still waiting on a fix for this, anyone?

  • wjosten Level 10 (94,210 points)

    Launch Activity Monitor from your Utilities folder...start looking a processes...see anything?

  • AKC87 Level 1 (0 points)

    This is what I got. All that I'm not sure about, anyway. I know coreaudio. Do you see anything I should be killing?

     

     

     

    AppleSpell.service
    autofsd
    blued
    configd
    coreaudiod
    coreservicesd
    cupsd
    cvmsComp_x86_64
    cvmsServ
    DirectoryService
    diskarbitrationd
    distnoted
    dynamic_pager
    fontd
    fseventsd
    fxlm
    hidd
    kernel_task
    KernelEventAgent
    kextd
    krb5kdc
    launchd
    launchd
    lsd
    mDNSResponder
    mds
    mdworker
    mdworker
    Nalpeirond6
    notifyd
    ntpd
    pboard
    securityd
    syslogd
    SystemStarter
    SystemUIServer
    taskgated
    usbmuxd
    UserEventAgent
    VDCAssistant
    WindowServer
  • wjosten Level 10 (94,210 points)

    What happens when you kill "coreaudiod"?

  • AKC87 Level 1 (0 points)

    It accomplishes about as much as a reboot. No change in output.

  • AKC87 Level 1 (0 points)

    Figured it out. It DID involve a SMC reset, but I had to trick it a bit.

     

    1) Plug in headphones or external speakers into the line-out jack

    2) Shut down the computer

    3) Perform an SMC with the speakers still plugged into the jack

    4) Boot up

    5) Disconnect speakers

     

    It's now back to "Internal Speakers", where it should be

  • bellipses Level 1 (0 points)

    AKC87, thanks for your persistance and post.

     

    Unfortunately, this didn't end up working for me.  I tried a variety of things and ultimately, it was a solution based on this link:

    https://josephhall.org/nqb2/index.php/stuckonmute

     

    BUT, what I did was hit play on my music in iTunes with my headphones plugged in, opened the Sound preferences pane in System Preferences, then I unplugged headphones and plugged them back in, then unplugged them again, until eventually sound came back on the internal speakers.  Had to do it about 3 or 4 times.

     

    Some additional info: 2010 MacBook Pro 17" (Model 6,1), just upgraded to OS X 10.7 Lion, started when I unplugged my Cinema display from the Mini-DisplayPort, and sound was unavailable even after trying all the things AKC87 mentioned.

     

    Hope this helps save someone else serious frustration.

  • randy.rawcat Level 1 (0 points)

    If the headphone jack turns red

    1. Open itunes play music with headphones for 10 secs

    2. Open system pref pane

    3. Unplug and replug Headphones 4 times

    4. Then twist headphone plug while plugged in clock wise

       This will reset your Headphone jack

  • drmac8 Level 1 (0 points)

    After trying everything - this worked for me too.

     

    I lost my audio after upgrading to 10.8 on my 2009 17" MBP.

     

    The only thing to add is that I rotated all the way around about 6 times before it would work. I don't know why this works - but it did for me.

     

    Good luck.

  • aBeautifulStory Level 1 (0 points)

    My sound was working perfectly fine until I unplugged my headphones while playing a game on my Macbook Pro 15" Mid 2010. I had the red light at first but now it's no longer there & no sound comes from my computer, be it through the speakers or headphones. Only the startup sound plays. Before I could almost here music playing through the headphones if I jiggled it around but that's not the case anymore.  System preferences shows "digital out" as my output and I've tried everything listed here. I can't reset the SMC because my battery isn't detachable like the older models.

     

    I have no apple care and as a 21 year old unemployed college student I definitely cant afford to replace the logic board. Any other solutions??

  • aBeautifulStory Level 1 (0 points)

    BUMP

  • dpwe Level 1 (0 points)

    Had this problem on my Early 2008 White MacBook (10.5.8).  Tried everything on the page, Sound Output still stuck on digital out. Kept plugging and unplugging headphones, twisting the headphone plug, and eventually exerting a little bit of force sideways in a circular motion with the headphone plug (like I was reaming the headphone socket).  Lo and behold, "Internal Speakers" are back.

     

      DAn.

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