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

[Ed Schouten]

>Number:         118136
>Category:       kern
>Synopsis:       sound: HDA driver silent on MacBook3,1
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 19 19:50:03 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Ed Schouten
>Release:        FreeBSD 6.3-PRERELEASE i386
>Organization:
>Environment:
System: FreeBSD mekker.fxq.nl 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Mon Nov 19 20:18:07 CET 2007 root at mekker.fxq.nl:/usr/obj/usr/src/sys/MEKKER  amd64
>Description:
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.
>How-To-Repeat:
I've used various utilities and applications, but sound is always
silent. Refer to the following dmesg for more information about the
device:

	http://junk.g-rave.nl/dmesg-mekker.txt
>Fix:
None. :-(
>Release-Note:
>Audit-Trail:
>Unformatted: