No sound out after wake up in Mavericks

I spoke too soon.

Today my sound is gone again.

Trying to get hold of same person at apple support but no luych so far...

I have the same problem. This update comes with a lot of bugs. Please fix ASAP.

I have the same issue on an iMac, generally after a whole night on screensaver (not even sleep mode).

Setting preference >> sound >> Output >> internal speaker and you are done.

Thanks. I'll try that next time it happens.

However, it is still a bug as it would mean the output changes on its own when on screen saver...

To Vikramjit: It doesn't work - I have Headphones showing there, if I remove headphones it says Internal Speakers - but there still no sound.

Same issue - no sounds after Macbook Air 2013 with Mavericks wakes up withe earphones in. Don't know if having watched YouTube on Safari contributes to this issue.

Should not Apple fix this issue if so many people are having it??

vikramjit wrote:

Setting preference >> sound >> Output >> internal speaker and you are done.

No does not work

In my case every time goes sleep mode problem starts. This unloads audio extension and kernel_task comes down sudo kextunload /System/Library/Extensions/AppleHDA.kext/ but does not always load it back. sudo kextload /System/Library/Extensions/AppleHDA.kext/ This post seems like talk about same problem but I have not get any result. Check it out may be will help some of you. https://discussions.apple.com/thread/5520342 This is absolutely annoying, I paid tons of money for this hardware and now instead of working have to spend time on fixing problems.

A application called OnyX seems to do the trick. Do a clean sweep, especially of sound settings. I had the same problem on a Mac Mini running 10.9. It now playing sound for more than an hour. Good luck.

Found solution for me!!!

Created new user account and migrated.

Yes, I have seen this occurrence on Mavericks on 2 diff. macbook Air machines. No audio from wake from sleep. Techs are working on a fix.

Go into sys. preferences > energy saver > UNCHECK both "put hard disk to sleep when possible" on both tabs of "battery" and "power adapter"

If any of you are running the APP "BOOM" this will interfere with the sound from sleep since it missing on wake from sleep.

Peace. 😊

I have the same issue with a late 2013 Retina Macbook Pro Haswell. The problem only appears when I close the lid with headphones connected to the headphone jack, and when I open it again the sound is gone OS-wide. Pushing the power button to enter sleep mode with headphones in gives me no problems, however.

The (highly temporary) solution for me at the moment is to remove my headphones before closing the lid. So right now this is more of an annoying thing rather than a complete dealbreaker. It seems several people are reporting the bug after upgarding to Mavericks, so hopefully Apple will do an update for it in the near future.

I'll definitely monitor this thread for potential fixes, though!

I have the same problem with my new Macbook '13 late 2013. If my Macbook sleep and start up later I have no sound. Very annoying Apple. I mean i paid more than 1500 € and have to restart my macbook to get a sound -.- ....

Aram Karapetyan wrote:

In my case every time goes sleep mode problem starts. This unloads audio extension and kernel_task comes down sudo kextunload /System/Library/Extensions/AppleHDA.kext/ but does not always load it back. sudo kextload /System/Library/Extensions/AppleHDA.kext/ This post seems like talk about same problem but I have not get any result. Check it out may be will help some of you. https://discussions.apple.com/thread/5520342 This is absolutely annoying, I paid tons of money for this hardware and now instead of working have to spend time on fixing problems.

I noticed this intermittently after resuming from sleep with headphones plugged in after a Mavericks upgrade. It seems to be accompanied with iTunes stuck at 100% cpu usage but that could be a red herring. I also have a new but probably unrelated Mavericks wifi issue where it appears connected but there is no traffic until I turn the wifi off and on.

Anyway I tried restarting a heap of processes (e.g. iTunes, coreaudiod) without much luck.

However, so far Aram's patch seems to fix the issue without a reboot:

sudo kextunload /System/Library/Extensions/AppleHDA.kext

sudo kextload /System/Library/Extensions/AppleHDA.kext