Hello all, I'm having a strange issue with getting audio via HDMI, and I'm hoping someone can help.
TL;DR HDMI audio used to work, after Migration Assistant, it stopped working.
I have an Intel NUC7i7BNH (Core i7-7567U, 32GB RAM, 256GB M.2 SATA SSD) that I setup using RehabMan's guide. I didn't dig deep in this post initially, so I had no idea that wasn't the right way anymore. I'll post separately about my issues trying to use Leesureone's EFIs.
I started with a basic install of High Sierra, then directly updated to Catalina. The only issues I had were graphics glitches (fixed by setting ProductName to iMac16,2) and BT/WiFi not working (unresolved). Ethernet, HDMI audio, App Store, iCloud, Time Machine, all the stuff I cared about worked.
Since I was happy with everything on this great little system, I went ahead and used Migration Assistant to transfer all my users/apps/files from my OS X 10.10 Yosemite system. Most of the data copied successfully, whatever didn't I did manually via rsync on the command line. After a reboot, I noticed HDMI audio no longer works. "System Information > Hardware > Audio" shows no devices. No Input or Output devices under "System Preferences > Sound".
I updated to the latest Clover (r5071), that didn't help. I made sure all kexts were up to date, that didn't help. I tried wiping out my EFI partition and starting over, that didn't help. I tried looking up info on troubleshooting AppleALC issues, but it's way over my head. In hindsight, maybe I should have just used rsync rather than Migration Assistant. Or maybe it is just a coincidence and something else I did messed up HDMI audio.
Can anyone offer some guidance? Thanks in advance!