Previous 1 2 3 Next 398 Replies Latest reply: Nov 14, 2015 1:03 PM by tolkien7
Carsten.Roth Level 1 (0 points)
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

MacBook Air, Mac OS X (10.5), Macbook AIr
  • WWVideoPro Level 1 (0 points)
    I have the same issue - just happened yesterday 10/1 - anybody got any ideas?
  • PatQ Level 1 (0 points)
    Same problem here for a few days now. No sound and also got "bluescreens" (no Kernel-Panic!). The screen just turns blue an a little loading-graphic appears, but nothing happens.

    This is really strange, anyone got contact with apple if this is an hardware issue?
  • Carsten.Roth Level 1 (0 points)
    Its really getting strange. Actually there is another threat about the same subject.

    Several people are reporting the same subject but it looks nobody found a solution yet?

    I really tried everything but still same problem

  • PatQ Level 1 (0 points)
    Maybe you could check another thing that is a little strange: since I've got these issues with the sound, I can't watch flash-videos anymore. Try to watch a movie on YouTube. It stops after a few seconds.
  • jgreafor Level 1 (0 points)
    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...
  • Philip Bendall Level 1 (0 points)
    From about 2 October my MacBook Air developed the same problems as described above: no sound output and (flash) video playback issues.

    Pressing the volume buttons on the keyboard flashes up the level indicator on the screen but it does not change, and also a little "O" with a line through it appears underneath. The Sound Preference panel says "No Input Devices Found" and "No Output Devices Found", and the volume slider is grayed out, set a max, with a grayed Mute box ticked.

    Flash video on various sites plays only for a second or two before stopping, although the file continues to load in.

    The only software I've installed around the same time this problem first occurred was CoolIris. I have since removed it using its Remove option in one of the menus.

    I have also had system crashes when trying to wake from sleep. The machine gives the blue screen and either locks up, or freshly reboots to the Login Screen (with previously logged in users now logged out, ie a restart).

    I think, but am not 100% certain, that I updated iTunes after the problem first appeared.
  • agabot Level 1 (5 points)
    It's a hardware problem. And it's becoming a widespread thing, from the looks of it.

    It happened to me last June. I tried everything you guys did, to no avail. So I took it to the local Apple service center here in Manila and they did determine it was a hardware problem: the audio board and the flex cable were screwed.

    So they replaced two things: Audio Board (Part No.922-8379), and Audio Board Flex Cable (Part No.922-8380). I got it back and it worked fine.

    Here's the kicker - last month it happened AGAIN. Apropos of nothing (no installs, nothing new software-side), the sound quit working, just like the last time. What was new was that I got a kernel panic after I woke up the Air from sleep, and then when I restarted, no audio. Again.

    (I don't know if this is significant, but the night before, I was oddly getting double-audio out watching something on VLC. The audio was echoing or repeating a second later. Thought nothing of it at first.)

    Now it's borked again, and I have to bring it back to the shop. Not in a hurry, because audio isn't mission critical to how I use my Air, but it sure is a bummer.

    I make do for the meantime with a USB iMic from Griffin, and earphones or external speakers if I need audio, but it's really bothersome to have use a dongle just to get audio.

    Apple should really look into this. I have half a mind to write about it in my newspaper column and raise a stink. Hey, I think I will.
  • Carsten.Roth Level 1 (0 points)
    Thanks Agabot, you really should publish that.

    It all looks like a epidemic failure without any direct influence of user behaviour. When my audio screwed up, it was the same thing coming from sleep mode like thousand times before.

    The main objective of this threat from my perspective is to find an effective countermeassure. Agabot says only through component change, so i do hope we will get some more feedback to confirm same/similar cases.

    And by the way: Audio is a basic function and for me it is critical !
  • nbirnes Level 1 (0 points)
    I agree! I've been following this thread very closely, ever since yesterday morning when I lost my sound entirely. Suddenly, the icon is gone -- and I know I didn't cause this. I've since zapped the pram, restarted, restarted, restarted ... searched the other forums for a clue ... and now this is harsh news indeed.

    Also, YouTube videos -- in addition to no sound -- are not running. Maybe that's a small clue that it's software instead of hardware? I am so hoping to see a fix from Apple via software updates before I have to take this in and leave it at the store.

    It would be cheaper to get the dongle described. But how can it be a hardware issue if the dongle works? Clutching at straws, I know ... but more info would be great, at least for this misery-loving company.
  • jgreafor Level 1 (0 points)
    I agree, with all due respect to agabot, this seems to me a software problem even if his was a hardware problem. I cannot get any sound out with headphones or external speakers, no sound. It would be nice if someone from Apple would weigh in
  • Carsten.Roth Level 1 (0 points)
    Do Apple people read the discussions here?

    Well, since i really want to have my sound back (asap!), i have to go to Service Center. Unfortunately i bought my Mac Book Air in Thailand and i have been to the Service Center in Bangkok before (with my Mac Book Pro). They actually have no idea at all besides long time waiting. This whole story makes me crazy and if there is any chance to solve it by software debugging, please tell us nice Apple people!!!!

  • Bob Oosdyke Level 1 (0 points)
    I just had the same thing all week long. Worked with apple for hours. Not fixed, they said send it in. I suggested the store, got an appt and they found a cable that was bad, fixed in 3 hours.

    Get it to an apple store quickly!
  • jgreafor Level 1 (0 points)
    i ran hardware diagnostics from disc 1 today and it doesn't even detect any audio hardware so must be a hardware problem
  • Carsten.Roth Level 1 (0 points)
    Thanks Bob Oosdyke,

    that would mean we all have an hardware problem ? Wow!

    Can you tell exactely what they have changed?
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