9 Replies Latest reply: Apr 3, 2014 8:22 PM by PeterConverse
forbes2000 Level 1 Level 1 (0 points)

Fairly consistently, when I unplug my speakers from the headphone jack, my 2011 MacBook Pro does not switch over to the internal speakers. When this happens, nothing is amiss in the Sounds Preferences pane, but no sound comes out of the speakers... only restarting the computer resolves the problem and starts the internal speakers back on. Does this sound like a software or hardware issue? Is anyone else having this problem with the new MacBook Pro's?

 

Thanks for your help!


MacBook Pro, Mac OS X (10.6.7)
  • mattgartner Level 1 Level 1 (0 points)

    Was having the same problem, after poking around the web for a bit, came across a MacRumors thread that seems to solve the problem (worked for me) http://forums.macrumors.com/showthread.php?t=1104755

     

    Go to Audio MIDI Setup (search for it in Spotlight)

    Go to the Built-in Output and play around with the Format.

    For me, 2ch-24bit Integer works for both my headphones and the built-in speakers. Play around with a couple settings, you should notice an immediate change if it works.

  • kyen99 Level 1 Level 1 (0 points)

    Same problem here.  I found a quick fix without rebooting.  Run terminal and do this:

     

    sudo killall coreaudiod

  • yogic2zones Level 1 Level 1 (0 points)

    Unfortunately, the sudo killall coreaudiod made no difference for me.

  • grantdoug Level 1 Level 1 (0 points)

    My solution for "No Sound Output to MacBook Speakers" - Re-route Sound Input / Output

     

    I have had this problem on my MacBook Pro, and tried EVERYTHING Apple & Forums suggested - SMC reset, PRAM reset. Apple advised me to send it in for servicing. Since it isn't covered by warranty, I didn't want to do that.

     

    If you do not want to pay Apple to fix your MacBook optical sound jack hardware, you can overcome the problem with this procedure I came up with myself, which overcomes the hardware failure caused by the headphone jack optical sensor thinking something is plugged in there when there isn't.

     

    Ironically, this solution requires a jack be inserted into the headphone jack. Annoying, but workable and free.   

     

    Step 1. Plug headphones in (don’t worry, you won’t use them) 

    Step 2. Change System Preferences -> Sound -> Change Internal Speakers to an Input!

    Step 3. Done!

     

    Obviously when you do want to use the headphones, you must revert this setting.

     

     

    input.png

  • ym11 Level 1 Level 1 (0 points)

    This problem as apparently caused by the optical sensor inside the audio jack thinking there is a headphone plugged-in, when there isn't.

     

    Fix that worked for me: Raise the notebook and blow air into the audio connector. Do it as hard as you can.

    After two blows, the speaker icon next to the clock came back to normal and the speakers began working again.

  • HoneyCrispy Level 1 Level 1 (0 points)

    Thank you ym11. This is the best, easiest solution, and with a big laugh! I registered just to give you a thumbs up for sharing the solution

  • deadeyejohnny Level 1 Level 1 (0 points)

    Well, I had the same problem and none of these solutions worked for me but I figured it out. I knew it had something to do with having used headphones, because I was using my iPhone earbuds on my mbp last night. But after trying all the probable solutions listed above and not having any results I figured I'd just try plugging my earbuds back in and it worked to fix the glitch. (Note: I tried plugging in first with a pair of regular, non-Apple headphones and it didn't change anything, in my case it was a glitch that was directly related to my iPhone's earbuds and required me to reinsert them, maybe because the 1/8th jack on them has 3 contact points instead of the regular two typically found on a pair of regular, everyday stereo headphones)

  • Jaewonywon Level 1 Level 1 (0 points)

    For me, rebooting the computer fixed the problem simple, orthodox method to get your computer to work again.

  • PeterConverse Level 1 Level 1 (0 points)

    This method worked from me too!!  I used a can of compressed air, though.  I initially sprayed into the headphone jack, but that didn't work.  Then I went in through the compartment in front of it that has a flip-up door.  I aimed the air in the direction of the jack and presto, the sound icon went black immediately!  I'm a believer... Very 'sound' advice!  Heehee!