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no output sound

running a dual G4 , connector to amp and speaker. Work fine, yesterday nothing

did nothing to the computer. But I have no digital out to select in output in the sound.

Also when I unplug the jack from the back of the computer my internal speaker is not very load,

volume up all the way.


Thanks

Martin

Posted on Dec 5, 2011 11:12 AM

Reply
Question marked as Best reply

Posted on Dec 5, 2011 11:41 AM

Hi Martin,


Open Audio Midi Setup in Applications>Utilities, see the input & output options & KHz setting there, some things will change it for their own use, then not set it back. User uploaded file

23 replies

Dec 5, 2011 4:01 PM in response to upctry2

Is this digital output or analog? You say digital but unless you have something working with the digital speaker socket in the back of the computer, or USB, it is analog.


What software are you using to produce this sound? You may have to adjust volume on both the application and on the computer.


It helps to provide as much information as possible with a question so we aren't guessing as to the setup. 🙂

Dec 6, 2011 12:14 PM in response to upctry2

Hmmm, to see if it's system wide or a user issue...


To find out if it's system wide or user specific, try this...

Open System Preferences>Accounts, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.

Does Sound or Midi have the same problem in the new account?

If not I suspect these files...


/Users/YourUserName/Library/Preferences/com.apple.audio.AudioMIDISetup.plist

/Users/YourUserName/Library/Preferences/ByHost/com.apple.MIDI.<12DigitHex#>.plis t

Dec 6, 2011 3:14 PM in response to upctry2

First, Safe Boot , (holding Shift key down at bootup), use Disk Utility from there to Repair Permissions, test if things work OK in Safe Mode.


Then move these files to the Desktop for now...


/Users/YourUserName/Library/Preferences/com.apple.finder.plist


/Users/YourUserName/Library/Preferences/com.apple.systempreferences.plist


/Users/YourUserName/Library/Preferences/com.apple.desktop.plist


/Users/YourUserName/Library/Preferences/com.apple.recentitems.plist


Reboot & test.


PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.

no output sound

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