Volume Icon Greyed Out

[Siddarth]

I've been using Yosemite since the first DP was released. Never had this problem before.

Things I have tried till now:

1. Resetting PRAM
2. Verifying and Repairing Permissions
3. Killing coreaudiod using the terminal

Repairing permissions fixed the problem once for me, but the volume icon greyed out again a few hours later.

 

[Siddarth]

bump?

 

[kpkp]

Try rebuilding the cache.

 

[Siddarth]

Try rebuilding the cache.

it worked thanks!

 

[Israel T]

How do you rebuild cache? I have the same problem.

 

[ABC5S]

What I did when this happened was to insert a headset cable into the computers headset jake, than removed it and it worked. Unknown if this will help you.