linux-kernel - No mixers on ATI RS780 Azalia

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Date:	Wed, 26 May 2010 14:04:27 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	alsa-devel@...a-project.org
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	perex@...ex.cz, tiwai@...e.de
Subject: No mixers on ATI RS780 Azalia

Hi,

I have here a Samsung 320MXn2 monitor/mainboard (typical x86_64 
environment) where I cannot get sound output to the internal speakers 
working.

To start, there seem to be two sound cards:

lspci/lspci -n:
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
00:14.2 0403: 1002:4383
01:05.1 0403: 1002:960f

/proc/asound/cards:
 0 [SB  ]: HDA-Intel - HDA ATI SB
           HDA ATI SB at 0xf0500000 irq 16
 1 [HDMI]: HDA-Intel - HDA ATI HDMI
           HDA ATI HDMI at 0xf0110000 irq 19

The soundcard responsible for the internal speaker is the 01:05.1/"HDMI" 
one.

Under Windows XP, I see the following mixer elements for it:

 * Master Volume
 * Wave
 * SW Synth
 * CD Player

Subsequently, there is sound (once I bump the volumes on these).

However, in Linux up to including 2.6.34, I only see a single mixer 
element:

 * IEC958/S/PDIF

mplayer etc. all successfully write to the device, but since there are 
not any further mixer controls, I can't unmute the essential channels.

alsa-utils is version 1.0.21, from openSUSE 11.2 x86_64.

Any help is appreciated.

Thanks,
Jan
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