regression in HDA functionality

There's seems to have been a regression in HDA functionality with the
ATI SB600 High Definition Audio Controller since the 200809 snapshot
(amd64) was made.

With this version of the driver from the snapshot, the headphone output
works:
/boot/kernel/snd_hda.ko:
$FreeBSD: src/sys/dev/sound/pci/hda/hdac.c,v 1.55 2008/07/15 02:34:44 delphij Exp $

With this version made from sources updated yesterday the headphones no
longer work:
/boot/amd64/snd_hda.ko:
$FreeBSD: src/sys/dev/sound/pci/hda/hdac.c,v 1.61 2008/09/16 20:03:34 mav Exp $

I can provide verbose boot output from both kernels, if desired.  Basically, it looks
like the headphone output gets disabled with the new driver.

---
Gary Jennejohn