audio not working on retina macbook pro 13" (late 2013) after sleep

I had this exact same problem and fixed it within 20 minutes.

First, open Finder. Press the 'Go' button at the top, then click on 'Go to Folder.'

From here type- /Library/Preferences/Audio and go

There should be 2 files in the audio folder. Move these to the trash.

Now you will have to complete a NVRAM reset. This will not affect any files or changes you have made to your computer. The reset will require you to shut down your computer.

NVRAM RESET:

1.) Shut down your laptop

2.) Locate the following keys on the keyboard: Command, Option, P and R. You will need to hold these down simultaneously in Step 4.

3.) Turn on the computer

4.) Press and hold the Comman-Option-P-R keys before the screen lights up

5.) Hold the buttons down until the computer restarts or makes the start up sound for the 2nd time

6.) Release the keys

Log back into your laptop, and try the sound. Hopefully it now works!

(Information sourced from Apple experts)

same issue

Thanks, and this worked for me too. truely surprised that 10.9.2 update still didn't fix this matter.

still happening on my NEW gen 15 inch retina. yes, the app detailed above "fixes" but that is not the point. This is pitiful for such an expensive computer.

@skype254

I had no audio at all after using Audacity today. Your workaround helped, so thank you very much! 😎

Same problem here. Hope a fix is coming soon. Have they even acknowledged it?

http://luvis.se/tipstricks/audio-not-working-after-sleep-and-after-use-with-head phones-issue-macbook-pro-retina-2013/

Your little program actually killed my audio and I needed to do the NVRAM rest again. I recommend not tu use that program from hotdogstand!

Within 18hrs fo buying my macbook 15inch i lost audio...i took it to apple and then replaced the ssd and audio module...7 days later the audio went again...and just know looking at this forum it just came back..madness that apples answer to to consume some hardware for a software problem...

I think its just a mavericks glitch

Hi all, I had the same issue with my Macbook Pro 13" Retina and just found the issue.

The problem was linked to an external audio software named Boom, which is meant to boost and enhance sound quality and volume. It is a software that has caused me nothing but problems since installing it. Once I got rid of Boom (or even turned it off) my audio was working perfectly.

For anyone still having trouble with this issue, spotlight search (cmnd + space bar) for Audio MIDI Setup, and make sure on the left hand side of this window that the built-in output is being used for sound output, not HDMi or any other audio output device.

Hope this helps some people!

Same problem here … but absolutely successful with that:

http://apple.stackexchange.com/questions/55243/the-headphone-jack-on-my-macbook- pro-just-stopped-working-how-do-i-fix-it