Bug 243116 - Apple hardware with Realtek ALC889A no sound
Summary: Apple hardware with Realtek ALC889A no sound
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 12.1-RELEASE
Hardware: amd64 Any
: --- Affects Some People
Assignee: freebsd-multimedia (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-01-05 15:42 UTC by Jason W. Bacon
Modified: 2020-01-05 21:11 UTC (History)
0 users

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Description Jason W. Bacon freebsd_committer freebsd_triage 2020-01-05 15:42:21 UTC 
There appear to be several Mac models with this issue.  I found a workaround using device hints here:

https://forums.freebsd.org/threads/macbook-pro-5-1-realtek-alc889a-sound-setup.56061/


hint.hdaa.0.config="ovref"
hint.hdaa.0.gpio_config="0=set"

For headphone jack autoswitch:

hint.hdaa.0.nid20.config="as=4 seq=15"

Might it be possible to tweak the base to make these models work out of the box?

I'm familiar with buildkern/buildworld in case either is necessary to test a fix.