kern/118136: sound: HDA driver silent on MacBook3,1

Ed Schouten ed at
Mon Nov 19 11:50:04 PST 2007

>Number:         118136
>Category:       kern
>Synopsis:       sound: HDA driver silent on MacBook3,1
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 19 19:50:03 UTC 2007
>Originator:     Ed Schouten
>Release:        FreeBSD 6.3-PRERELEASE i386
System: FreeBSD 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Mon Nov 19 20:18:07 CET 2007 root at  amd64
Brand new Apple MacBooks posses a Intel (or Realtek?) HDA audio chip,
namely the 284b8086. They get detected by the snd_hda driver, but output
is always silent. Playback works `normally', but the output is probably
muted somewhere.
I've used various utilities and applications, but sound is always
silent. Refer to the following dmesg for more information about the
None. :-(

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