Volume control problem in Lion

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!!!

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

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

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.

Thanks danb1974! works for me!

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

MBP 13" MID 2009

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/>

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

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

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.

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

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.

Great! it works for me.