[Bug 275332] Conexant HDA CX8070 (0x1f86) codec is not configured properly

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275332

--- Comment #8 from Christos Margiolis <christos@freebsd.org> ---
I have no way to test this card, so I can only guess and provide ideas,
unfortunately. From what I understand from a few forum posts, this chip has
some strange non-standard configuration, so it makes sense that it works
properly on Windows, since they provide official support for it.

I skimmed through [1] and saw that there are some manual patches for CX8070,
among other codecs. As a first step, could you somehow verify that your machine
goes through these code paths? Adding printfs and recompiling the sound driver
on Linux might be too much of a hassle, but I see that there are already some
calls to (seemingly) debug functions; codec_dbg() and codec_info(). CX8070
should go through patch_conexant_auto(), which prints some info.

[1]
https://github.com/torvalds/linux/blob/master/sound/pci/hda/patch_conexant.c

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