Mac OS X Lion: Sound problem after unplugging my headset/headphones.

What works for me is the fix suggested to me when I first posted this, and used it again today and it worked again. I have only had to do it a few times in the last several months.

I am using 10.5.8 though.

"Run Activity Monitor and find the process called "coreaudiod", select it and press Quit Process."

Then restart.

it automatically restarts (the process)

I just started having the problem with 10.7.2

Running 10.7 right now by re intalling Mac OS Lion

temporary fix

I know I'm a little late at upgrading my OS but I had my resaons. haha. When I got the time to upgrade it yesterday, I thought that my system was fine until I wanted to watch something on youtube. I tried my iTunes and it had also the same problem. No Sound. and iTunes won't play the song.

Panicked. Read this. Tried the audio midi thing and BAM! Thanks a lot. Merry Christmas!

I have a HS-04B Genius headset when i plug it in to my 15" MacBook Pro to the Audio out port it works and i hear the output sound when i connect the mic jack to the audio Line-in port the mic doesn't work.....................................Does any one have an explanation...............

This happens on MacBook Pros to, it's a bug in mac os x. You can fix it (it stays fixed for me by:

Open "Audio Midi Setup.app"

Under source the menu on the right has bit rates, click the menu and select the last one: "2ch-32bit Float",

No clue why but it should fix it instalty, test by hitting the volume key.

Similar thread

https://discussions.apple.com/thread/2199371?start=15&tstart=0

Reinstalling a new downloaded version of itunes did the trick for me 🙂

I have an USB-soundcard ( Logilink)

with Leopard/SnowLeopard i just Plugin and had sound and microphone on USB with Headset.

with Lion i have sound but NO Microphone! ****!

Only the built-in microphone works

I got help by the internet:

C-Media CM6206 Enabler for Mac OS X v2.1

http://www.dr-lex.be/software/cm6206.html

Iinstalled this one and got my USB-soundcard with microphone and sound working :-)

Check this for other USB soundcards, i think it works.

I'd like to add another twist to this mystery:

I recently moved to a late 2011 MacBook Pro, i7 processor, Lion 10.7.3 (11D50b).

When using a Plantronics Calisto Bluetooth headset with UBA-100 Bluetooth adapter and Dragon Dictate 2.5.2 to dictate text there is no problem. With Sound Pref's set to Input this headset, it works fine with various applications.

However, when using this same headset with Sound Pref's and Sound Effects set to Output to this device, there is no audio through to the headset from Lion's Text to Speech utility. I do get sound from this headset with iTunes and with YouTube - haven't tried other sources - as I would expect with these Preference settings. But nothing from Text to Speech!

I have Snow Leopard 10.6.8 installed on an external hard drive. When running the 2011 MacBook Pro from this drive, the Text to Speech sound is there. So it looks to me that the problem is in Lion.

I have tried dropping the "coreaudiod" process as suggested in this thread, but with no effect. I have also tried some of the usual things such as changing Sound Pref's, restarting the OS, and unplugging, replugging, and resetting the headset. No change.

Any insight and help would be greatly appreciated.

I am also facing the same problem. Early 2011 13' MBP.

Same problem with a 2.5 Ghz Intel Core i7 MBP running 10.7.3

Temporary fix that worked for me was to sleep and wake the computer with the headphones plugged in.

Hugely inconvienent. Hopfully there will be a fix in the next update.

this
sudo killall coreaudiod
worked for me...

NO SOUND AFTER HEADSET FIXEXD!

I had a startup chime so I new my speaker worked.

The sound preference pane had no internal speakers or no output device.

Every sound volume adjustment was greyed-out at max setting.

Theory: IF inserting headset plug into headphone jack kills built-in speakers, AND removing headset plug returns sound to internal speakers, THEN perhaps some kind of a physical cut out switch inside headphone jack gets stuck in off position or even in between on and off positions.

My Solution: I just 'roughly jammed' headset plug in and out headphone jack while watch sound icon in top right menu bar to accidently go black, instead of its constant greyed-out state.

Results: Worked after about 5 'roughly jamming' repetitions ! ! !

Disclaimer: If there's a weak physical aspect in jack, maybe 'roughly jamming' repetitions will break it.

GOOD LUCK, FOLKS!

The little kill coreaudio kill app worked great.

I hope Apple takes note and fixes this glitch in a coming update.

Thanks a bunch Ken.

sudo killall coreaudiod - also worked for me.

fyi - i have no speacial setups or gizmos running. i just had physical headphones plugged in. when i unplugged them built-in audio did not come back. in the sound control panel, it even still said "headphones" in the "type" section for internal speakers.

clearly either an OS bug, or a headphones jack problem. thanks all, good thread!

(btw, bad UX on the forum here - auto correct spelling everywhere except in this text entry box? oh apple...)

Killing the coreaudiod process worked great for me too. I am on 10.7.3 on a 15" Early 2011 MacBook Pro.

Thanks.