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Sound icon is greyed out at start up (though sound can be heard); only workaround found so far: plugging in/out earphone, then sound icon is reactivated

Hi,

On my new MacBook Pro / Lion, Sound icon is greyed out at start up, as well as the output volume in System Preferences (though sound can be heard, you just can't change the volume); only workaround found so far: plugging in/out earphone, then sound icon is reactivated.

Do you have any idea? Concurrent access to sound output from another software? (Skype, Growl...?)

PS: in Windows 7 / bootcamp, volume settings work perfectly from start up

Many thanks,

Fred

MacBook Pro, Mac OS X (10.7), Bootcamp

Posted on Aug 5, 2011 3:40 AM

Best reply

ecotecit

Level 1

63 points

Posted on Aug 5, 2011 3:47 AM

Firstly, have you tried repairing premssions?

Secondly, try deleteing the prefernce files for the system sound

rm ~/Library/Preferences/com.apple.systemsound.plist

and

rm /Library/Preferences/com.apple.soundpref.plist

From the terminal

And reboot.

View in context

18 replies

Aug 8, 2011 2:49 AM in response to macwzrd

All Right! I'll try this and keep you informed!!

Aug 20, 2011 5:27 AM in response to fredblondieau

I have a macbook pro late 2010 with Lion installed, I had my earphones in last night, today I went to play some tunes and the volume up or down just showed a circle with a line through. I did all the updates restarted several times to no avail. I then as above plugged the earphones in and out several times and all is back to normal, I was going to remove lion a week or so ago, due to some other issues. I'm ordering more memory and a bigger HD so I will do it then. I think apple is spending too much time at war in the phone market and needs to sort this out 🙂

Hyper-X2

Level 1

4 points

Sep 6, 2011 6:07 PM in response to saintmonkey

Give my solution a shot if you don't find any consistent way to resolve your issue.

http://forums.macrumors.com/showthread.php?t=1212577

Sound icon is greyed out at start up (though sound can be heard); only workaround found so far: plugging in/out earphone, then sound icon is reactivated