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Level 1

33 points

MacBook Air no audio output device found ???????? please help

Dear all,

since yesterday my Mac Book Air can not find audio output device anymore, so no sound.

Its actually strange because i was running the Hardware Test (Boot + D and so on) but it does not show any failure or problem.

Could you please help me? Anybody has any idea?

Thank you
Carsten

MacBook Air, Mac OS X (10.5), Macbook AIr

Posted on Oct 2, 2008 4:29 AM

Best reply

jgreafor

Level 1

5 points

Posted on Oct 4, 2008 2:25 PM

I have a similar issue, (1) I have no sound from either my internal speaker or from headphones, (2) the volume control does not appear in the menu bar, (3) opening garage band brings up an error code "Core Audio: Selected Driver not found. (-10202)", (4) in iTunes I cannot play songs (the tiny speaker icon to the left of on the song shows volume but the timeline at top does not advance), (5) same youtube issue (appears to start but stops after a second or two), (6) some other video (for example ABC full episode player) will play but no audio.

I tried (1) cold boot, (2) zapping the nvram, (3) reinstalling quickplayer, no change. The other threads are for other hardware and refer to a headphone jack reset issue, but that seems to involve different hardware (there is no "red indicator light" on the mba).

This problem appeared out of nowwhere, it happened after (but not immediately after and apparently not associated with) installing itunes 8.0.1.

any help would be greatly appreciated...

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411 replies

Oct 14, 2008 10:09 AM in response to Carsten.Roth

Hmm ... sorry, but in my opinion it cannot be a hardware-problem. with my mba sound also stopped around beginning of october, when I updated iTunes to version 8.0.1 or a little after. Same symptoms as many others here: No audio-icon on the screen, no input-device and no output device in the control-panel, iTunes playing not possible, also no Youtube or other flash-movies.
Then I tried a few things, first safe boot, then run the whole Onyx procedure (repair permissions, clean up all caches, boot cache, kernel cache, Quicktime components, audio components ...) and restart. And suddenly sound is back again - at least for some hours. I did that that twice already and it worked for some time. So i doubt it is a hardware-problem - if I am wrong with this - please tell me!

Gary16

Level 1

1 points

Oct 14, 2008 7:39 PM in response to wesku

I can't swear this will work for everyone or that it's really a fix, but our MacBook Air lost audio (and the sound icon) a few days ago. Based on some advice on another forum, I restarted it in "safe" mode and heard the startup sound. The Air never got to the desktop in "safe" so I powered down and restarted in normal mode and got the startup sound again. When the desktop finished loading, there was the sound icon back where it should be and the audio is back. Very strange but success at least for now.

apiccini

Level 1

0 points

Oct 15, 2008 12:58 PM in response to Gary16

I've got an ibook G4 and the same thing is happening to me. It is happening to a great many people, all dating from late July to now. Partner suggested installing a separate sound card. So, I can hear with headphones, but nothing through the speakers. And I also get blue screen. So, surely this must be a software problem - unless apple built all of its computers to have catastrophic sound cable failures in autumn 2008 to coincide with the collapse of capitalism.

It would be great if those of you on the forum that write for magazines, etc could lobby on this. My computer is the property of my university, but they don't know how to fix Macs. I work with video so sound is meant to be part of my everyday.

jgreafor

Level 1

5 points

Oct 16, 2008 4:36 PM in response to apiccini

Okay, I'm at the apple store and they replaced the speaker assembly, audio board, and audio board flex cable. It was in repair for over a week (from Monday 10/6 to Thursday 10/16). See my previous posts for the symptoms I had. I think the various posts relate to various problems. In my circumstance, it was a hardware, not software, problem. Look carefully at the differing facts in the differing posts.

iBry

Level 1

0 points

Oct 17, 2008 10:55 PM in response to Carsten.Roth

I have the same issue with my MacBook Air also. It started today out of the blue. Both the speakers and headphones don't work, and the Sound System Preference doesn't show any output or input devices, although the System Profiler does show an Intel High Definition Audio item under the Audio (Built In) section.

I've also reset, tried booting in safe mode, and erased / reinstalled Leopard but no luck.

tlai573

Level 1

0 points

Oct 18, 2008 6:40 PM in response to iBry

Just experienced this problem as well. I was using Skype and all of a sudden, no more sound. I rebooted it, performed the commandalt+pr, and still nothing. This happened after I updated iTunes.

randallm

Level 1

4 points

Oct 18, 2008 7:50 PM in response to tlai573

Same here as well. Maybe it's a firmware thing. Has anyone tried to reapply a firmware patch? Can this be done? Please advise.

Lu Wi

Level 1

4 points

Oct 22, 2008 4:00 AM in response to randallm

Same issue with me, more or less upon updating to iTunes 8, but also around same time as updating to 10.5.5. Discovered today (22 October 08). Everything I read above leads me to believe that this is a software issue. My exact situation:
1) no sound icon in the top menu bar
2) when I try to adjust audio with volume keys, I get international 'no' symbol at bottom of volume slider icon
3) in audio control panel, I get 'no output devices found'

Here's hoping Apple can cook up a patch soon. (Surely they use their own computers and will have had the same problem?)

DegM

Level 1

0 points

Oct 22, 2008 4:21 AM in response to Carsten.Roth

Same problem as everyone here, I did some research on the Error code, its a low level problem with the firmware on the chip. I have had my board replaced and I land up with the same problem coming out of sleep mode, I have been able to fix it with Onyx clearing the cache's but sometimes it works and sometimes it doesn't, I am convinced it happens when writing or saving to the chip when coming out/in of sleep mode no fix that I can see...other than this Onyx things..anyone have any other tools that might be of use...

Oct 22, 2008 9:59 AM in response to Carsten.Roth

Hey there,
same problem here. Sound just stopped working this morning. Apple: would be elegant to address the issue asap, please. MacBook Air ain't exactly cheap!
Thank you. Claude

Lu Wi

Level 1

4 points

Oct 22, 2008 11:29 AM in response to cletessier

OK, so mine is the iBook G4, not the Air, but the issue does seem to be with notebooks (I also run two desk-tops: a six-year old iMac, and one I bought earlier this year both working fine). After restarting the iBook off of the system install CD and doing a couple of re-starts, my audio is back. I don't imagine that I have solved the problem (but maybe I'll be lucky), but this is further evidence that it's software, not hardware. For those of you for whom audio has failed, do you get the start-up tone? If so, surely this indicates that the hardware is working OK. If not, the problem could indeed be hardware or software, but this looks more and more like a notebook software issue.

Gary16

Level 1

1 points

Oct 23, 2008 8:53 PM in response to Lu Wi

I called Applecare about the no sound issue on my Air. The tech had me first take headphones and put them in and out of the headphone jack several times to see if that would do anything. It did not. She then suggested I take it to the local repair center. Before we hung up I restarted the Air and there was the startup chime and the sound icon was back. However, later that night the icon disappeared again. Over the next few days it has come and gone, usually on a restart but not always. I plan to check with Applecare again soon since I have a long-term protection plan.

HKSC

Level 1

0 points

Oct 24, 2008 5:22 PM in response to Gary16

I am using a 2.4GHz Macbook Pro and seem to have the same problem after updating a bunch of software including iTune yesterday.

The start up tone is working and when I boot up the computer from an earlier Carbon Cloned hard drive, sound works perfectly fine. So it's not a hardware issue, I am pretty sure.

Those in the know, please shed some light to help solve this problem, thanks.

Oct 29, 2008 3:38 AM in response to Carsten.Roth

I Have the some trouble.

No sound
No play on Youtube
My Sound Card is on Contets Hardware
ITunes 8.0.1

Oct 29, 2008 1:38 PM in response to Carsten.Roth

I'm working IT and came across a Mac laptop with the problems described above.

No idea about getting the sound restored, but you can fix the YouTube/flash video problem by updating to the latest version of Flash:

http://labs.adobe.com/technologies/flashplayer10/

Was there a software update from Apple at the beginning of October that caused all of this?

MacBook Air no audio output device found ???????? *please help*