Since upgrading to 10.7 - Volume Control Buttons sometimes don't work

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Since upgrading to 10.7 - Volume Control Buttons sometimes don't work

I just upgraded to 10.7 Lion and have the following problem.

Some times my Macbook Pro 13 (Mid 2010) don't let me control the volume with the vol up and down buttons. The speaker symbol appears

while pressing the buttons but the speaker is greyed out. While that, sound plays with the last adjusted volume.

Most times the problem appears after standby mode.

A restart don't help in my case! Sound settings are all correct. I tried to shut down, restart in Win 7 via Bootcamp, restarted in OS X Lion.

Still no sound control available :-(

So I've searched the web.. It seems the goal is to reset Core Audio Daemon :

Open Terminal, type in or copy :

sudo kill -9 `ps ax|grep 'coreaudio[a-z]' |awk '{print $1}'`

type in your password and confirm - voila : volume control works again!

But this is very annoying, because the last 5 years i've used os x i've never had a problem like this!

Is this a known problem ? Any known workarounds or patches available ?

Hope anybody can help and/or Apple fixes asap!

MacBook Pro, Mac OS X (10.7)

Posted on Jul 20, 2011 9:44 AM

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Answer 1

Jul 20, 2011 11:05 AM in response to Max Velocity

I am having the same issue and it is frustrating. How could such a simple, yet crucial feature be taken away?!? Or is this a user error. I'm not tech illiterate, and have looked in all the preferences that make sense. Help!

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Answer 2

Jul 20, 2011 12:06 PM in response to Max Velocity

Okay, fixed it! I tried a restart a couple of times and it didn't seem to fix it. Tried looking up for other people with the same issues and nothing. So instead of restart, I did a Shut Down and let it sit for a couple minutes. Fired it back up and there was the volume control all restored. Odd, but true.

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Answer 3

Max Velocity Author

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Jul 20, 2011 12:40 PM in response to Bruce Meli

I just tried this.. worked a while.. but it's not a solution! It's important that the macbook stays long enough in

power off state. It helps too, reseting the PRAM ( http://support.apple.com/kb/HT1379?viewlocale=en_US )

But this is a temporary solution too.. :-(

Please keep reporting..

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Answer 4

Jul 20, 2011 2:45 PM in response to Max Velocity

I have the same problem on my Macbook Pro 13 Late 2009, but still none of the solutions help! How could Apple made such a mistake?!

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Answer 5

miljank

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Jul 20, 2011 10:03 PM in response to Max Velocity

MacBook Pro 13 2010 and the same problem. Killing coreaudiod solves the problem, but a permanent solution would be very nice.

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Answer 6

Jul 20, 2011 10:54 PM in response to Max Velocity

any help form Apple Support ???? ........... i got same problem with Macbook Pro Mid 2010, how can i fix it 😢

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Answer 7

marco187

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Jul 21, 2011 1:41 AM in response to Max Velocity

Same here.... Updated to 10.7 and no volume changes possible. (MBP Mid 2010)

Support??

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Answer 8

Jul 21, 2011 4:41 AM in response to Max Velocity

Same here.... Updated to 10.7 and no volume changes possible. MBP Early 2011 13 inch.

Put in/out headphone makes it work again but only temporarely.

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Answer 9

macs.it

Level 1

4 points

Jul 21, 2011 2:46 PM in response to Max Velocity

I have exactly the same issue on my Macbook Pro 13 mid 2010.

You can plug and then unplug hearphones to solve the problem but it's only a temporary fix.
Please Apple take a look at this, is really annoying!

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Answer 10

Jul 21, 2011 5:40 PM in response to Max Velocity

I, too, have the same problem on my 13" MBP (mid 2010).

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Answer 11

McMeller

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Jul 22, 2011 12:55 AM in response to Max Velocity

The solution was, in my case, plugging in an headphone-jack for a few seconds.

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Answer 12

tam 2011

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Jul 22, 2011 3:47 AM in response to Max Velocity

Macbook pro 13inch mid 2009 , same issue , no sound control post 10.7 upgrade although speakers do work .

decided after scouring the internet to erase my SSD and do a clean install of lion ( created a USB key with lion image ) .

Lion installed in 15 minutes and bingo ,sound controls working , felt chuffed with myself .

Shut system down went to bed after my nightshift .

Awoke 4 hours later ,switch system on and guess what !!!! you got it , no sound control ,all greyed out again .

Applied the pseudo thing as above in the terminal window ( i'm not very mac technical being an old windows user since windows 3.1 but now a mac convert haha ) and bingo again , sound control is working .

fingers crossed that apple provide the permanant solution to this annoying issue .

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Answer 13

Jul 22, 2011 7:33 AM in response to Max Velocity

Same story. Macbook pro 13inch early 2010

Solution - plugging in an headphone-jack for a few seconds.

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Answer 14

Jul 22, 2011 7:36 AM in response to Max Velocity

I'm experiencing the same issue, Macbook Pro 13 inch, Mid-2010. Putting the headphones in for a little while solves the problem, but I have to do it every time I boot up.

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Answer 15

Max Velocity Author

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Jul 22, 2011 10:21 AM in response to doctorcdf

Thanks for your response, so what we can conclude is, that it seems to be a 13" MBP specific problem. Does

anybody elese with an other Apple Model have the same problem ? I installed and tried Lion today on a 17" MBP Mid 2010, no problem here.

Hope Apple is observing this discussion! Does one of you having still support with a Apple Care Protection Plan ? If yes, eventually you can point the support personnel to this discussion.

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