Mac Pro (2009) - NO SOUND with Radeon HD 5870 installed

Discussion in 'Mac Pro' started by Hadouken!, Dec 8, 2011.

  1. Hadouken! macrumors newbie

    Joined:
    Dec 7, 2011
    #1
    Hi folks - really need some help here. I'm currently running a;

    Mac Pro 4,1 (early 2009)
    2.66 Ghz Quad-Core Intel Xeon
    8 Gb RAM
    Boot ROM MP41.0081.B07
    Mac OS X 10.7.2

    I've just swapped out my stock GT 120 card for a new Radeon HD 5870, I have it connected to my Sony SDM-X93 monitor via DVI. On booting up, I now have NO SOUND on my Mac at all and the sound control panel states 'no output devices found'. I've also tried booting up in both Snow Leopard and Windows 7 x64 (bootcamp) but with the same results - no sound at all. All the sound controls appear 'muted'.

    I have read a note on Apple's site regarding a no sound issue on the MP 2009 when used with the mini display connectors but I am and will only be using the DVI port.

    Does anyone have any suggestions please? is the card faulty? I'm unsure as to why installing a graphics card creates issues with audio

    If I can't get it working it will just have to go back and I'll have to live with the GT 120

    cheers all!
     
  2. Hadouken! thread starter macrumors newbie

    Joined:
    Dec 7, 2011
    #2
    Issue fixed

    FIXED: Do a PRAM reset (reboot and press "apple+p+r" so that you hear the boot chime two times than release the keys)

    Thanks to Caesar 091 for the tip!
     
  3. johniet macrumors newbie

    Joined:
    Jan 3, 2012
    #3
    No sound MacBook Pro

    Im a bit disappointed right now, i used to use my wireless Bose speakers normally and when i wanted i used the internal speakers, but now sound only works with the WIRELESS speakers, and the internal ones don't show up in the list of sound preferences, i have restarted the PRAM several times with alt+cmd+P+R, there is no red light because its WIRELESS, i hate to register in forums but i am really desperate and i feel stolen...$1200 for this???
     
  4. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #4
    This is the Mac Pro forum (desktop). For your laptop you might get better help in the MacBook Pro forum.
     

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