Sound not working after 10.9.4 Mavericks Update - HELP!

How does this not get caught during testing? Anyways... plist solution worked for me. I haven't rebooted yet but this is a temporary fix for sound.

I have the same issue.

I did all of the above and i just use time machine to recover to 10.9.3 but i still have the same issue.

please what else can we try?

regards,

A

Permanent solution to fix no sound after sleep until next update:

Roll back to 10.9.1 audio driver:

System/Library/Extensions/

AppleHDA.kext

Version 2.5.3 works.

Terminal:

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

Delete 10.9.4 version of AppleHDA.kext

Replace with 10.9.1 version.

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

Repair Permissions in Diskutil.

You can use KextUtility instead of sudo kextload /System/Library/Extensions/AppleHDA.kext and repairing permissions.

Many thanks sykosoft for the fix.

Apple, pull your finger out.

I have found a solution for anyone having audio issues (mainly sound deterioration in all music related applications/software). After troubleshooting for a month (and getting mad), I found something. When I upgraded to Mavericks thats when the issue arose. I managed to downgrade to Mountain Lion (since my new Mac shipped with Mountain Lion) although Im not sure its necessary to downgrade once you do what I did to fix the noise issue. This is more for Pro-Tools users and those who use Digidesign interfaces (I have an Mbox 2 Mini). I have Pro-Tools 8.03, but I uploaded a newer driver update for Pro-Tools 9, and everything is fixed now. There are certainly compatibility issues with OSX and third party software and devices, and both Apple and Avid (Digidesign) don't want to deal with anyone that does'nt want to upgrade to the newest stuff, but for those of us that cannot afford to upgrade and need to work, this is a solution.

Check your drivers!

@sanjampet

your solution worked for me perfectly, thank you.