danb1974
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Q: 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

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danb1974

Q: Volume control problem in Lion

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  • by Chaindler,

    Chaindler Chaindler Jul 30, 2011 2:26 PM in response to danb1974
    Level 1 (15 points)
    Jul 30, 2011 2:26 PM in response to danb1974

    It is working!

  • by chrisfromsaint paul,

    chrisfromsaint paul chrisfromsaint paul Aug 2, 2011 2:40 PM in response to danb1974
    Level 1 (0 points)
    Aug 2, 2011 2:40 PM in response to danb1974

    Hello danB,. I am essentially an Apple rookie. I believe your sugestions above will work for mine as I've tried everything else in this forum, but I cant seem to find this step you mentioned.

     

    Can you, or someone walk me through how to get to this point? I am not sure how to get "In Root" on a

     

    Mac.....Edit /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist, look for keepalive word and change the following <false/> to <true/>

     

    Thanks in advance everyone, this is driving myself and especially my wife NUTS!!!

  • by Chaindler,

    Chaindler Chaindler Aug 2, 2011 2:48 PM in response to chrisfromsaint paul
    Level 1 (15 points)
    Aug 2, 2011 2:48 PM in response to chrisfromsaint paul

    1. Open Terminal

    2. Type this "sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit"

    3. enter your password

    4. In textedit open /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist

    5. Change false to true

    6. Save

    7. Reboot

  • by rk-MA,

    rk-MA rk-MA Aug 2, 2011 5:06 PM in response to danb1974
    Level 1 (0 points)
    Aug 2, 2011 5:06 PM in response to danb1974

    This did not work for me, Mac Pro 12 Core Early 2011

  • by oGul,

    oGul oGul Aug 2, 2011 10:21 PM in response to danb1974
    Level 1 (0 points)
    Aug 2, 2011 10:21 PM in response to danb1974

    I have tried the sollution above but it did not work for me. It disabbled sound completly and had to reinstall Lion. Can you please guide me how to do this change as root. What I did was copy the file on desktop and them copy back in to the folder and overwritting the original because it did not allow me to change it.

    Thanks.

  • by danb1974,

    danb1974 danb1974 Aug 2, 2011 10:52 PM in response to oGul
    Level 1 (0 points)
    Aug 2, 2011 10:52 PM in response to oGul

    If you are uncomfortable with editing a text file as root (chaindler's instrunctions should do fine) better don't and wait for apple to eventually fix this at some point, or make sure you have headphones handy everytime you reboot.

     

    Editing a copy and overwriting the original may change the permissions and launchd may not be happy about that. Not that it requires a reinstall, but all this is command line stuff, not suited for those used only with graphic interfaces.

  • by ctociz,

    ctociz ctociz Aug 3, 2011 12:26 PM in response to danb1974
    Level 1 (0 points)
    Aug 3, 2011 12:26 PM in response to danb1974

    Thanks danb1974! works for me!

     

    Copy file to desktop -> Modify file in desktop -> copy file back (authenticate and replace)

     

    MBP 13" MID 2009

  • by jsnavarro23,

    jsnavarro23 jsnavarro23 Aug 3, 2011 9:56 PM in response to danb1974
    Level 1 (0 points)
    Aug 3, 2011 9:56 PM in response to danb1974

    Thanks, It works for me too!

     

    <?xml version="1.0" encoding="UTF-8"?>

    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">

    <plist version="1.0">

    <dict>

            <key>EnableTransactions</key>

            <true/>

            <key>Label</key>

            <string>com.apple.audio.coreaudiod</string>

            <key>ProgramArguments</key>

            <array>

                    <string>/usr/sbin/coreaudiod</string>

            </array>

            <key>KeepAlive</key>

           <true/>

  • by Brian_in_RI,

    Brian_in_RI Brian_in_RI Aug 4, 2011 6:03 AM in response to hiukong
    Level 1 (0 points)
    Aug 4, 2011 6:03 AM in response to hiukong

    Min too is a Mine is MBP 2010 13"    and it worked for me AFTER  i repairded disk permissions  THANK YOU  Ill key a watch on it

  • by AshTemple,

    AshTemple AshTemple Aug 4, 2011 1:15 PM in response to Brian_in_RI
    Level 1 (0 points)
    Aug 4, 2011 1:15 PM in response to Brian_in_RI

    It worked initailly after i restarted I could play itunes music, but as soon as I lauched Plex which plays in Dolby Digital, the settings went back to what they were and got no sound. Lion is total rubbish! Where is this update?! Apple remind me of Microsoft of old, not putting customers first, rushing out releases without fixes and shoddy, bloated operating systems

  • by oc-master,

    oc-master oc-master Aug 5, 2011 3:50 AM in response to oGul
    Level 1 (0 points)
    Aug 5, 2011 3:50 AM in response to oGul

    Hi! I did the same. I have edited the file on desktop and then replaced it in LaunchDaemons folder. Seems that the System changes the file owner too. To fix it just open Disk Utility, select your system partition and click "check premissions" (or so). Changed file will be found in the List. Then you can fix it. It worked for me and i have volume control now.

  • by danb1974,

    danb1974 danb1974 Aug 5, 2011 4:06 AM in response to oc-master
    Level 1 (0 points)
    Aug 5, 2011 4:06 AM in response to oc-master

    Fix permissions would be a very good idea for those who edit a copy of the file and then replace it

     

    (Being familiar with unix I edit the file in place, but this involves command line stuff)

  • by Brian_in_RI,

    Brian_in_RI Brian_in_RI Aug 5, 2011 7:56 AM in response to danb1974
    Level 1 (0 points)
    Aug 5, 2011 7:56 AM in response to danb1974

    Just an Update

     

    the fix has held for me for the last three days -- I've tried many variations of turning the machine on and off -- devices connected and disconnected

     

    I edited the file with plist pro saved it and then rebooted, command r fixed disk permissions and its worked as described so far

  • by Max Velocity,

    Max Velocity Max Velocity Aug 6, 2011 2:23 AM in response to Brian_in_RI
    Level 1 (0 points)
    Aug 6, 2011 2:23 AM in response to Brian_in_RI

    It worked for me exactly one day. Now i have the same problem again. File permissions are ok.


    Can't confirm that this is the solution for this problem! In the major of cases the problem appears after resuming from standby mode. Changing the value for KeepAlive from false to true has no effect. the chance that it works as it should is the same. Sometimes the volume controls don't work after  going 20 times to standby state. Sometimes its after 5 times, sometimes directly after a restart. There's absolutely no consistency in this.

  • by danb1974,

    danb1974 danb1974 Aug 6, 2011 3:50 AM in response to Max Velocity
    Level 1 (0 points)
    Aug 6, 2011 3:50 AM in response to Max Velocity

    My workaround is for those who have no volume control after restart or poweron and have to plug in headphones to make it work.

     

    You seem to have a different issue. I never had a sound issue when resuming.

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