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

Open Key board preferences and un-check the box where all F keys act like standard keys.

Try resetting the PRAM and the SMC.

resetting PRAM & SMC doesn't correct this...it's a continuing issue that can be "fixed" by plugging & unplugging headpones or external speakers 3 or 4 times...I have been in contact with Apple Support, who are working on it but don't have a solution as yet

Hi,

As I mentioned in another post, I have the exact same greyed out volume controls and no onboard sound on my MBP mid 2009 13". The update made no difference what so ever either. I have tried the various restarts and resets and nothing has worked for me. I have yet to try the terminal suggestions and will let you know how that goes.

I have narrowed the trigger to the Pro starting up with Bluetooth turned on. When on, no sound. If Bluetooth turned off before shut down, then on start up, sound intact. Then you can turn on Bluetooth, connect mouse, etc and its fine. I just keep closing BT before shut down and there is no issue (for me). If I forget to switch off, then the headphones in the jack and out again can kick the onboard sound on again.

This is an inconvienient solution and I hope they sort this out as its an irritating bug that should never have got past the beta stage!

Dave

My 13" Mid 2010 MacBook Pro also exhibits the same problem after upgrading to OS X Lion. I thought the 10.7.1 update will solve this problem but sadly, it did not. I was kinda hoping that 10.7.2 will fix this but that bubble has already broken after reading this thread.

I would also like to point out that this problem also exist in my sister's Early 2010 MacBook (white). Everything was working fine on OSX Snow Leopard.

I hope Apple fixes this bug soon. Its very annoying!

How do you "open terminal?"

What does that mean?

i'm having the same issues, my volume keys stopped working 😟

Terminal is an application. Go to application/utility and you will see the Terminal app, then double click to open

Found Terminal. Thank you.

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

but it didn't help w/the voulme button issues. Do you have any other suggestions?

Thanks for your help!!

Thanks! Had this intermittent problem since the 10.7 upgrade as well, killing coreaudiod helped:

$ sudo launchctl list | grep audio 7159 - com.apple.audio.coreaudiod $ sudo launchctl stop com.apple.audio.coreaudiod $ sudo launchctl list | grep audio 7589 - com.apple.audio.coreaudiod

Or, if proctools (from MacPorts) are installed:

# sudo pkill coreaudiod

Thanks again!

C.

sudo killall coreaudiod

also works, and is easier to remember. but this is utterly ridiculous that regular os x users have to open up the terminal to get their audio to work.

for me, with an 8 month old macbook pro, a reboot doesn't even fix the problem. i know because i've tried rebooting 10 times in a row (not exagerrating). the only way is to use the terminal. i know how to use the terminal, but most users don't, and shouldn't have to.

if windows 7 or 8 required people to use the command line i wouldn't be surprised--windows is supposed to be painful to use. but for a user friendly os, this is... disgusting. if i were a new mac user, and my laptop had this problem, i'd return it. and buy an ipad. which is probably what apple wants...