how to solve greyed out volume control

after upgrading to Mountain Lion lost control of volume settings.

MacBook Pro, Mac OS X (10.6.8)

Posted on Aug 12, 2012 3:52 PM

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Posted on Jan 25, 2013 1:13 AM

Finally, I fixed it and so far so good.


What I did is:


Open a console and type in :


sudo chown -R _coreaudiod:admin /Library/Preferences/Audio


This will fix permissions.


Then type in:


sudo update_dyld_shared_cache -force


This will clear and rebuild dyld (dynamic linker)


And finish with:


sudo killall coreaudiod


To restart the audio daemon. The sound should come back instantly and keep working on reboot.



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how to solve greyed out volume control

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