8 Replies Latest reply: Apr 27, 2008 10:43 PM by BDAqua
kieran.hanrahan Level 1 Level 1 (0 points)
hello all,
i have a mac pro running 10.4.11. the problem i have is that even though i have selected +line out+ as my device for sound output, the apple keyboard volume buttons control the internal speaker volume. this happens every time i start my computer. the internal speaker makes the volume changing pop noises when i use these buttons, even though music comes through +line out+ just fine.
i have figured out a workaround. i can log out and then log back in. that second time i login, the buttons work correctly and i hear the pop noise in the line out.
i have tried running +repair permissions+ in +disk utility+ during the first login to solve the problem, but that did not work.
any help would be appreciated. thanks

mac pro, Mac OS X (10.4.11)
  • 1. Re: Keyboard Volume Controls Broken
    Living Fossil Level 1 Level 1 (90 points)
    I can't help, but I've suddenly got a problem on my Intel Mac Mini which at least merits the same description. I'm using the headphone output to external speakers. Up to very recently I could control the volume and turn mute on and off from the three keys above the numeric keypad section of my keyboard. Now this has stopped working: when I press one of these keys, I get the semi-transparent display of the speaker and the level of volume. Underneath that is a circle with a line through it (perhaps a 'mute' symbol) - but the volume up and down keys don't indicate changes in volume, and the sound itself is not affected. The Mute key shows the mute status (no "sound" lines coming out of the speaker icon), but no muting takes place. The volume up and down keys turn off the mute status display. The volume control on the toolbar at the top of the screen still works as normal. The only changes I know about are the recent security updates from Apple (all my Tiger software is up to date). Can anyone suggest any way of restoring these keys?
  • 2. Re: Keyboard Volume Controls Broken
    jN Did That Level 1 Level 1 (0 points)
    I had a system update the other day and am having the same problem. The volume controls across the board are not working. The system is on a constant MUTE. Adjusting the volume via the buttons shows all of the bars as full volume, but the "buster" symbol is below. Nothing. No pop noises either.

    What's strange is that when I go to the preferences to change my alert sound - then it makes noise. So the problem isn't global, but isolated to the main audio.

    If someone else thinks of a way out - please let me know, as I luckily haven't had a big multimedia project come in for now!
  • 3. Re: Keyboard Volume Controls Broken
    Joel Breazeale Level 1 Level 1 (35 points)
    Thank you for your observation about the volume control in the menu bar. I am having a similar problem. My audio is muted, when I unmute the audio it stays unmuted, then if I increase the volume I get a sound and visual feedback but the audio immediately goes back down and is muted.

    [I am thinking about taking my MacMini in to see what a Mac Genius has to say about it.]
  • 4. Re: Keyboard Volume Controls Broken
    Joel Breazeale Level 1 Level 1 (35 points)
    Try zapping your PRAM. It worked for me!
  • 5. Re: Keyboard Volume Controls Broken
    Joel Breazeale Level 1 Level 1 (35 points)
    I spoke too soon. The problem is still happening.
  • 6. Re: Keyboard Volume Controls Broken
    Joel Breazeale Level 1 Level 1 (35 points)
    OK, this is embarrassing, but I'll go ahead and embarrass myself before the world! 8-) It happens I have a USB-based Logitech headset that has a volume control. The control happened to have something sitting on top of it. So when I was trying to do something at the keyboard the headset was fighting me. Check to be sure all of your volume controls are idle!
  • 7. Re: Keyboard Volume Controls Broken
    The Tran Level 1 Level 1 (0 points)
    Same is happening to me after a safari update. Volume keys trigger the Screen visual, but nothing happens. i have to switch to internal speakers and it works.
  • 8. Re: Keyboard Volume Controls Broken
    BDAqua Level 10 Level 10 (116,475 points)
    Try making a new user, if the sound works there then trash this file for the original user...

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