No sound after sleep

Same problem with my month-old MBP, 15", 10.9.2.

Hey Dr. Prem,

This only worked for one session on my mac. The next day I had the same problems as before.

Grtz,

Tijn

The Netherlands

I too was having this issue and using the script to unload/load the kext and restart coreaudiod worked for me.

I wrote a small helper app that runs in your Menu Bar to automate the process (even running automatically upon wake if you wish). Because of sandboxing issues I can't submit it to the Mac App Store but if anyone wants to check it out you can grab the latest release here: https://github.com/cliffom/appleHDAReset/releases

Do any of you have wavtap installed? I had the same issue, uninstalled wavTap and know I don't have this problem anymore.

I have the problem with Skype open!

I had some problem with no sound after sleep. I was found that Mac Os selects DisplayPort as audio output device after sleep.

Confirmed, this is the problem. I've had it for a few years and I have a Dell UHsomethingsomething 27" 1440p monitor plugged into my display port slot. Going into sound, I can see that the monitor (which has no speakers) is a selectable output, but when selected all sound dies.

Good find, DsTr111.

Apple Engineers, please fix this problem in the next major release.

Thanks! This was helpful.

You can take this and put it in an applescript and run it from your dock too.

This one is really sloppy, but it does the trick for me.

setuserResulttothebutton returnedof (display dialog "You may want to quit all applications that use sound before running this script (i.e. browsers, skype, garageband, etc.)." buttons {"Cancel", "Easy Try", "Tough Try"}

ifuserResult = "Easy Try" then

do shell script "sudo killall coreaudiod" with administrator privileges

delay 3

display alert "If this didn't work, try running the script again and choosing \"Tough Try\"." giving up after 2

beep 1

elseifuserResult = "Tough Try" then

do shell script "

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

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

sudo killall coreaudiod" withadministrator privileges

delay 3

display alert "Done. Hopefully it worked." giving up after 2

beep 1

endif

I periodically have this problem. Just now, I put my computer back to sleep (via the apple menu), woke it up and my audio worked.