HT204388: Mac computers: Frequently asked questions about using HDMI

Learn about Mac computers: Frequently asked questions about using HDMI
Rorro23

Q: I can display my mac to my tv but no sound!!!

HELPPPPPP

iPhone 5, iOS 7.0.4

Posted on Jan 3, 2016 11:18 PM

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Q: I can display my mac to my tv but no sound!!!

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  • by lllaass,

    lllaass lllaass Jan 4, 2016 1:25 AM in response to Rorro23
    Level 10 (188,002 points)
    Desktops
    Jan 4, 2016 1:25 AM in response to Rorro23

    What model Mac Pro?

    How is the monitor connected?

    Displayport only supports audio for the 2010 and later Mac Pro desktops. The firmware for the 2009 Mac Pro can be flashed to a 2o10 Mac Pro to support audio if the card supports it.

  • by John Lockwood,

    John Lockwood John Lockwood Jan 5, 2016 2:11 AM in response to Rorro23
    Level 6 (9,240 points)
    Servers Enterprise
    Jan 5, 2016 2:11 AM in response to Rorro23

    As Illaass says we need to know more information.

     

    As an example possible problem, if you have a classic Mac Pro e.g. a 2009 or 2010 model, with a video card with a HDMI port e.g. on a Radeon HD 7950 video card then Apple chose not to enable audio via this connection even though it can do it and it does work in Windows via Boot Camp. There is a third-party kernel extension which can enable audio via the HDMI port although it requires enabling developer access to kernel extensions i.e. enabling the loading of unsigned kernel extensions.