HDMI Audio not detected with AppleALC.kext and Nvidia 1070ti

Hello!

Thanks to the great vanilla guide I was able to get almost everything working. However, my mackintosh does not detect the HDMI output for sound at all. Unfortunately this is necessary for my work.

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The audio currently works for my "internal speakers" which is the headphone jack of the motherboard.

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I was confused if I needed to do anything regarding the device-id. In the tutorials they mention finding the framebuffer that the current display is sent to and ensuring it appears as an HDMI connector type.

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I am including my system details below.

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----------------------------------------------------------------------- System Info ----------------------------------------------------------------------- Host blah-imac.lan OS macOS High Sierra Version 10.13.6 (Build 17G8030) Kernel Darwin 17.7.0 x86_64 RAM 16.00 GB Model Identifier iMac18,3 CPU Intel(R) Core(TM) i5-8600K CPU @ 3.60GHz Intel Generation ??? Platform ID 0x00000000 Board ID Mac-BE088AF8C5EB4FA2 FW Version 175.0.0.0.0 Serial Number ... Hardware UUID ..... System ID ... ROM ... Board Serial Number ... VDA Decoder Decoder Failed ----------------------------------------------------------------------- Serial Info ----------------------------------------------------------------------- Country China (Quanta Computer) Year 2018 Week 12.17.2018-12.23.2018 Line 1385 (copy 1) Model iMac18,3 Valid Possibly ----------------------------------------------------------------------- GFX0 ----------------------------------------------------------------------- GPU Name GP104 [GeForce GTX 1070 Ti] GPU Device ID 0x1B8210DE Quartz Extreme (QE/CI) Yes Metal Supported Yes Metal Device Name NVIDIA GeForce GTX 1070 Ti Metal Default Device Yes Metal Low Power No Metal Headless No