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Periodically, my MacBook Pro 17" stops recognizing my headphones. No amount of unplugging and replugging seems to help. The sound settings never show headphones as an output device. How can I fix this? The only thing I can find elsewhere on the Internet are people saying, "Reboot!" This works, but is impractical and annoying.

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Regular audio jack headphones or USB ones? –  Gerry Aug 14 '12 at 19:40
    
Regular audio jack. –  Brandon DuRette Aug 14 '12 at 22:54
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4 Answers

up vote 8 down vote accepted

There seems to be a bug whereby if the headphones are plugged in when the MBP is put to sleep and are not present when it is rewakened, the headphones stop being recognized. The solution is to:

  1. Unplug the headphones
  2. Put the MBP back to sleep (close the lid; without an external display hooked up)
  3. Plug the headphones back in
  4. Wake the MBP by opening the lid.

This should fix the problem.

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Im tired of this thing.... need some permanent solution –  Saqib Saud Apr 30 '13 at 7:19
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open system preferences and go into sound. under the output tab make sure where it says "use audio port for:" is set to "sound output"

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Plug-in the headphones. Using the button in the upper right corner of the powerbook, restart the computer. Hold down the alt option key while clicking on the speaker volume icon in the top, menu bar. The headphones should show on the dropdown menu. They are now you output device. This worked for me.

Simply ... plug in the headphones. Restart the powerbook.

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Is the restart really necessary? –  patrix Oct 25 '13 at 6:09
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Yes sleep the macbook connect the headphones then awake the mac, voila!

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How is this different than the answer above? –  bmike May 30 '13 at 14:46
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