From owner-freebsd-multimedia@FreeBSD.ORG  Wed Feb 15 12:09:26 2006
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From: Thomas Gellekum <Thomas.Gellekum@gmx.de>
Date: 15 Feb 2006 12:44:58 +0100
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Subject: No sound with ALC650
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Moin,

I'm having trouble with the following device:

pcm0: <nVidia nForce2> port 0xe400-0xe4ff,0xd000-0xd07f mem 0xe1080000-0xe1080fff irq 5 at device 6.0 on pci0
pcm0: <Avance Logic ALC650 AC97 Codec>

Recording works fine, playback doesn't work at all. I'm simply getting
no sound out of any of the six channels. There are no error messages
of any kind, sound seems to play in real time and vanish.

The board is an ASUS A7N8X-E Deluxe, kernel is a current -current,
snd_ich compiled in. There's another multimedia device on this board,
which is not recognized by FreeBSD:

none6@pci0:5:0: class=0x040100 card=0x0c111043 chip=0x006b10de rev=0xa2 hdr=0x00
    vendor   = 'NVIDIA Corporation'
    device   = 'nForce MCP-T? Audio Processing Unit (Dolby Digital)'
    class    = multimedia
    subclass = audio

Mixer settings, jftr:

Mixer vol      is currently set to 100:100
Mixer pcm      is currently set to 100:100
Mixer speaker  is currently set to  75:75
Mixer line     is currently set to  45:45
Mixer mic      is currently set to   0:0
Mixer cd       is currently set to  75:75
Mixer rec      is currently set to  45:45
Mixer igain    is currently set to   0:0
Mixer ogain    is currently set to  50:50
Mixer line1    is currently set to  75:75
Mixer phin     is currently set to   0:0
Mixer phout    is currently set to   0:0
Mixer video    is currently set to  75:75
Recording source: mic

An older kernel (2005-12-28, IIRC) behaves the same.

Any hints are appreciated.

tg