As the title says, after following the wiki guide for installing a vanilla Mojave mackintosh I am left with a system where everything works except for the HDMI audio.
I have not touched anything else on the system. I have a USB DAC that gets correctly recognised and I can play videos and music through it perfectly, so something must be working. However, I don't get a speaker logo at the top right and when I go into settings->sounds->output devices, only the USB dac gets shown and nothing else.
My kext/other folder on my install USB (I haven't committed it to the hard drive yet) contains the latest versions of:
AppleALC.kext IntelMausiEthernet.kext Lilu.kext USBInjectAll.kext WhateverGreen.kext
as shown here
I've followed corpnewt's audio mechanic guide to troubleshoot. Since this is a perfectly fresh install and I hadn't messed with the AppleHDA file or anything, most of it was superfluous. I followed the advice in the final paragraph to look at the output of the IOService Explorer. This is where it gets strange: my layout-id value, as you can see here, is <07 00 00 00>, i.e. not one of the values listed in your guide. Now I triple-checked with my config.plist which you can find here (screenshot of the relevant section) and I'm definitely using layout 1. The Gryphon Z87 uses the Realtek ALC892 which AppleALC [should support(https://github.com/acidanthera/AppleALC/wiki/Supported-codecs). I have since tested layouts 2 and 3 as well and nothing changed. When using them, I also get layout-ids in IOExplorer that are wildly different from what's listed in corpnewts guide.
Am I even looking in the right place? The USB DAC is working so does that mean the audio is working correctly? In other words, is my audio the problem or is this purely and HDMI audio issue?
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