osslord
Level 1 (1 points)

Q: PNY Quadro K5000 Mac Edition - Audio Problems via DP/HDMI adapter

Hello,

 

as stated in the topic I have some troubles to get the sound working on my TV witch is plugged into the Mac Pro via HDMI/DP adapter.

 

Setup:

Mac Pro 5.1 with OSX 10.9.5

Graphics PNY Quadro K5000 Mac Edition

 

My Question ist this: Ist there a Problem with the OSX, the Card or the Adapter?

The Macs Internal sound works fine. The TV plugged into a Laptop via HDMI works too.

 

If anyone has a similar Setup or a clue whats going on, I would very much apriciate some help.

 

best regards from germany,

osslord

Mac Pro, OS X Mavericks (10.9.5)

Posted on Mar 24, 2015 9:38 AM

Close
osslord

Q: PNY Quadro K5000 Mac Edition - Audio Problems via DP/HDMI adapter

  • All replies
  • Helpful answers

Previous Page 2

  • by osslord,

    osslord osslord Jun 27, 2015 9:04 AM in response to osslord
    Level 1 (1 points)
    Jun 27, 2015 9:04 AM in response to osslord

    In short:

     

    Apple supplies the sound drivers... not.

     

    Nvidia produces the chips and the graphics drivers, but sound drivers are owned by apple. Thats what i have been told by PNY and Nvidia.

     

    Why is this card sold at the apple store, but apple doesnt supply buyers with a driver? Idk.

     

    And btw. the card works perfectly under bootcamp, with sound!

  • by MacSuDe,

    MacSuDe MacSuDe Jun 11, 2016 5:13 PM in response to osslord
    Level 1 (4 points)
    Desktops
    Jun 11, 2016 5:13 PM in response to osslord

    Thank you for the detailed report.

     

    Have the same problem, but with the DELL 5k display….What a pity that no proper sound driver has been added to the OS.

     

    BTW, have u then tried other cards e.g. TITAN?

  • by John Lockwood,

    John Lockwood John Lockwood Jun 13, 2016 2:41 AM in response to osslord
    Level 6 (9,379 points)
    Servers Enterprise
    Jun 13, 2016 2:41 AM in response to osslord

    Apple do not themselves support sending audio via non-original video cards even though the card may be capable of this!

     

    This artificial crippling of video cards by Apple is extremely annoying and does not enhance Apple's reputation, it is made particularly absurd by the fact that if you boot in to Window via Boot Camp using the same Mac, the same video card, the same cable and the same display it works straight away with all features enabled.

     

    Not only does this apply as in this case to audio support, but it also applies to support for 30bit color.

     

    While it seems currently still impossible to get 30bit color to work in OS X with video cards in a classic Mac Pro that can support this, there is a way to get audio to work. A kind person has written a kernel extension which enables HDMI Audio and this I believe also works for Displayport Audio. I use it successfully with an AMD Radeon HD 7950 card to get audio out via HDMI.

     

    See http://forums.macrumors.com/threads/guide-hdmi-audio.1499797/page-15#post-215990 93

     

    Note: My AMD Radeon HD 7950 is also capable of 30bit color as I have proved both by checking AMD's specs and doing so successfully via Boot Camp in Windows 10. However Apple as mentioned have wilfully crippled their OS X drivers.

     

    You will have to enable developer mode in Yosemite to allow loading an unsigned kext, in El Capitan you will need to at least temporarily disable SIP while you install the kext.

  • by Johnb-one,

    Johnb-one Johnb-one Jun 13, 2016 1:59 PM in response to osslord
    Level 4 (1,918 points)
    Desktops
    Jun 13, 2016 1:59 PM in response to osslord

    all I can tell you is what I've heard, which isn't much. You may have to add a .kext extension of some kind, if HDMI audio was not working . If HDMI audio was there, it would show up under audio, then Output, or try getting Audio MIDI app working and see what's there as well. As for the needed .kext and what to do with it, I'll leave that up to you and Google to solve

     

    JB

Previous Page 2