No HDMI audio after 10.9.2 update

[toleda]

This is a fresh copy checked now, sorry for all trouble

When did you change the graphics card? 10.9.2 did not cause your HDMI audio problem.

For Nvidia/HD4000, same for Mavericks, see Mountain Lion: HD3000/HD4000 with AMD or Nvidia, Working Together

Edit dsdt/GFX0 to:

                Device (GFX0)
                {
                    Name (_ADR, Zero)  // _ADR: Address
                    Name (_SUN, One)  // _SUN: Slot User Number
                    Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
                    {
                        Store (Package (0x0a)
                            {
                                "@0,connector-type", 
                                Buffer (0x04)
                                {
                                     0x00, 0x08, 0x00, 0x00
                                }, 


                                "@1,connector-type", 
                                Buffer (0x04)
                                {
                                     0x00, 0x08, 0x00, 0x00
                                }, 


                               "@2,connector-type", 
                                Buffer (0x04)
                                {
                                     0x00, 0x08, 0x00, 0x00
                                }, 


                                "@3,connector-type", 
                                Buffer (0x04)
                                {
                                     0x00, 0x08, 0x00, 0x00
                                }, 


                                "hda-gfx", 
                                Buffer (0x0A)
                                {
                                    "onboard-2"
                                }
                            }, Local0)
                        DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                        Return (Local0)
                    }
                }

 

[Obecny]

When did you change the graphics card? 10.9.2 did not cause your HDMI audio problem.

For Nvidia/HD4000, same for Mavericks, see Mountain Lion: HD3000/HD4000 with AMD or Nvidia, Working Together

Edit dsdt/GFX0 to:

Great, thank you very much, my HDMI audio is back thanks to you! your dsdt edits fixed my problem
later on I will try to run my hd4k
Thanks

**** Hello again, short update - finally my nvidia and hd4k can work together thanks to you so I have two cards in my system still have no clue how to make a use for it but I am glad it is finally works! My airplay display is still greyed out but the only receiver I have is linux server with xbmc so I believe it could be a problem will see.
Thanks again for everything

 

[Jingu]

[Solved] Mystery of dissapearing HDMI audio after 10.9.2.

I realize this is an old thread, but I just solved for myself why my HDMI audio went from working before 10.9.2 to not working on Mavericks 10.9.5 on my Asus Core i7 series 5.

I compared the ioreg outputs of HDAU@0,1 for my pre-10.9.2 working HDMI and my 10.9.5 non-working (non-detected) HDMI.

Toleda pointed out in this thread that many inadvertently still had HDAEnabler that was disabling HDMI. But, some of us never installed HDAEnabler, so something else was going on. Those who say that Apple changed something were right on the money.

This is the ioreg of a working HDMI

When HDMI is working I have AppleHDAController@0,1 under HDAU@0,1. On my non-working HDMI there's no AppleHDAController@0,1. So things are pointing to something different with the newer AppleHDAController causing it not to show up in ioreg.

In the plist of AppleHDAController pre-10.9.2, we had

<key>IOPCIClassMatch</key>
<string>0x04020000&amp;0xFFFE0000</string>

But, 10.9.2+, it becomes

<key>IOPCIPrimaryMatch</key>
<string>0x3b568086</string>

Now, in my Mavericks 10.9.5, in the AppleHDAController plist, I simply changed it back to what we had pre-10.9.2:

<key>IOPCIClassMatch</key>
<string>0x04020000&amp;0xFFFE0000</string>

This sounds like a simple fix, but once again, not only is my HDMI detected, but it's fully functional. I just bitstreamed AC3 to my receiver. It works perfect.

Toleda was right that there's no particular dsdt edit to modify between when our HDMI was working pre-10.9.2 and when it's not 10.9.2+. The change was on Apple's side.

Problem solved. At least for me on my Core i7 Series 5.