Without the attached patch, the s/pdif output on the Hades Canyon NUC does not work.
"Well known" issue, less known fix. As far as I can tell, there is no risk of any averse side-effects. But a bonus fix is enabling on-wire headset microphone, by chaining the right 'model' choice for the hardware.
If I should Cc: someone directly for this patch to be picked up, please let me know.
I have been running with this patch for half a year or so.
Patch passes checkpatch.pl
Patch is based on what 'cyber4o' posted on the insanelymac forum [1]. All the glory to this person, any error is likely mine.
Some other users with issues: [2] [3]
Dag Bakke
[1] https://www.insanelymac.com/forum/topic/339291-guide-hac-mini-osx-mojave-on-...
2] https://bbs.archlinux.org/viewtopic.php?id=270917
[3] https://www.reddit.com/r/intelnuc/comments/9ft9x8/any_linux_users_got_the_sp...