mac Pro defaults to built in audio?

Discussion in 'Mac Pro' started by ~Lukasdp, Nov 16, 2010.

  1. ~Lukasdp macrumors newbie

    Nov 15, 2007
    My shinny new Mac Pro Quad 2.8 defaults to the built in speaker and not my attached external logitec speakers. Every time I want to watch or listen to something I have to navigate to the sounds panel and select Line Out.
    Everything is connected properly and this never happened on my MacBook Pro.
    thoughts? Suggestions?

    Attached Files:

  2. TheDoc macrumors member

    Mar 18, 2008
    I believe this is a problem with all 2010 Mac Pros (at least that I've read).

    I also need to reset preferences each time the machine restarts.
  3. Garen macrumors regular


    Apr 9, 2010
    Los Angeles Area
    I have a 2010 6 core with Bose 5.1 surround sound system (USB) and have no problem with default Bose Sound System. Try zapping the Nvram it might work.
  4. khollister macrumors 6502a


    Feb 1, 2003
    Orlando, FL
    No problem here either with a 2010 quad. The startup chime is via the internal speaker, but by time I get to the desktop the default output audio is my Apogee Duet.
  5. crw macrumors member

    Aug 7, 2010
    I have the same issue. Every time I restart my Mac Pro switches back to the internal speakers from my optical out.

    Pro tip: If you activate the volume menu extra, you can option-click it to get a list of outputs. Much quicker than going to System Preferences.
  6. ~Lukasdp thread starter macrumors newbie

    Nov 15, 2007

    thanks everyone! could someone please explain what zapping the Nvram is?
  7. khollister macrumors 6502a


    Feb 1, 2003
    Orlando, FL
    Non-volatile RAM - it is normally called PRAM (Parameter RAM). It is memory that holds HHW configuration details that the EFI (firmware) uses.

    To reset it, hold down Cmd, Option, P & R at the same time while the machine boots (do it before apple shows on the gray screen)/ After you get the second startup chime, release the keys and it will boot normally

    EDIT -here's the official Apple tech note:
  8. lemonade-maker macrumors 6502


    Jun 20, 2009
    Its permission on the /Library/Preferences/Audio directory.

    My post in another forum:

    I deleted the Audio dir and created a new one as root in the terminal. Can do it like this:

    sudo mkdir /Library/Preferences/Audio

    then set permissions, er owner:

    sudo chown -R _coreaudiod:admin /Library/Preferences/Audio

    Then change the input in the sound pref pane using an admin account. Should create the file.
  9. ~Lukasdp thread starter macrumors newbie

    Nov 15, 2007

    aces, ill try that when I get home. thanks!
  10. ActionableMango macrumors G3


    Sep 21, 2010
    My 2010 refurb works fine. Audio output stays where it was last set.
  11. simplymuzik3 macrumors 6502a

    Jan 29, 2009
    I have the same problem. 6 Core 2010. I have to option click on the sound icon at the top and change output each time. Good thing I only reboot once a week.
  12. loungecorps macrumors member

    Aug 25, 2010
    I have experienced this issue also. But only with the headphone jack on the front of the case. Since I now have all my equipment setup through the back and sometimes use headphones, it's nice not to have to manually switch back and forth.

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