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danb1974 Author

Level 1

0 points

Volume control problem in Lion

MBP 13" mid 2010 (7.1) just installed a fresh copy of Lion. After reboot volume control does not work (audio device - which is internal speakers - has no controls), but there is sound. After inserting headphones the volume control starts working, and remains functional after removing the headphones.

Basically after each reboot I have to temporary plug headphones to get volume control working. Nothing in dmesg or system.log

I'm familiar with linux so if you tell me how to debug this I'll happily do it, not afraid at all of command line or searching through logs.

(and you'd think that having control both over hardware and software would prevent such frustrating problems)

Macbook Pro 2010, Mac OS X (10.7)

Posted on Jul 23, 2011 11:21 AM

82 replies

danb1974 Author

Level 1

0 points

Aug 6, 2011 12:43 PM in response to ZENIGH

Anybody experiencing this issue with the stock hdd? One another discussion somebody has this problem only after changing the hdd with a ssd. I also have upgradedd to a non-apple ssd (first thing I did after getting the mbp) but never tried with the original hdd. Sounds more and more like a race condition.

Aug 6, 2011 12:51 PM in response to danb1974

Here :

Replaced the stock HDD (250GB Hitachi) with a Samsung 256 GB PM800 SSD a year ago. Did not have any problem yet - until installing Lion!

bjarnehr

Level 1

0 points

Aug 9, 2011 10:40 AM in response to danb1974

Hi, I've had the same problem.

I changed volume level at the same time I disconnected the headphones..

my solution :

terminal:

sudo -i

"enter your password"

as root :

launchctl stop com.apple.audio.coreaudiod

launchctl start com.apple.audio.coreaudiod

notice, if any programs are open and may have a hook to the sound driver, it may crash (my garagband did)

the sound works perfectly afterwards.

Aug 9, 2011 11:05 AM in response to bjarnehr

Installed 10.7.2 Dev Update 2 Days ago. Everything fine until now. Hope the problem is solved! (at least in my case) I will report, if the problem appears again.

gpfountz

Level 1

0 points

Aug 10, 2011 8:50 PM in response to danb1974

Had Lion installed for a couple weeks, never saw this issue. Put in an SSD yesterday, and saw the volume controle issue today. The launchctl stop and start cleared the problem, at least temporarily.

_Ebony__

Level 1

8 points

Aug 13, 2011 8:06 PM in response to danb1974

This worked for me. Thanks!

Aug 14, 2011 1:42 AM in response to danb1974

I have a Macbook Pro 17" (end 2009), run lion for some weeks now and never noticed the audio issue, because audio seemed to work. Until I tried to record my jazz band yesterday live, connecting a Saffire Pro 40 and had to change the audio input in Booemrecorder whose audioprefs showed nothing to choose. The system prefs panel's audio input and output showed "no system audio" too. Fifteen minutes before we had to start I tried all suggestions made here (deleting prefs, repairing permissions, editing system plist file), with no effect.

Today I read this topic to the end and bjarnehr's post was the resolution for me.

Thank you!

Svende

Level 1

0 points

Aug 15, 2011 9:59 AM in response to danb1974

I'm am really screwed. Pls help and even call me by phone.

I tried to edit the file /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist

but I think i messed up at the file new has another extension like /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist.txt

I don't know how to change it. I only use graphic interfaces and never terminal.

Hence the file is missing I can't start my computer anymore. I stalls at the white screen with the grey logo and the timer below.

I tried to make a safe reboot with no luck (cmd + shift) at startup.

What do I do?

Svende

Level 1

0 points

Aug 15, 2011 10:10 AM in response to Chaindler

I screwed up and have a suspission that I added and extra extension to the file like this

/System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist.txt.

Result my computer can't boot anymore and stalls at the white screen with the grey logo.

Please help - what do I do.

svende.com

Aug 15, 2011 10:44 AM in response to Svende

I think safe mode is just the shift key

Svende

Level 1

0 points

Aug 15, 2011 10:49 AM in response to Brian_in_RI

You are right Brian_in_Rl

That's what I tried and the PRAM "cmd + alt + r + p"

and still no luck

Aug 15, 2011 10:52 AM in response to Svende

you have to use terminal or PlistEdit pro, because the file your editing is at the root and you need root permissions thats what I understand anyway I used plisteditpro and it worked as described