[ALSA - lib 0001659]: dmix not working with ice1712

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1659> 
======================================================================
Reported By:                jdthood
Assigned To:                
======================================================================
Project:                    ALSA - lib
Issue ID:                   1659
Category:                   0_general
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
======================================================================
Date Submitted:             12-18-2005 21:07 CET
Last Modified:              01-04-2006 11:16 CET
======================================================================
Summary:                    dmix not working with ice1712
Description: 
In Debian bug 342026 the submitter reports:

> After an upgrade today [to 1.0.10rc1?], the dmix plugin stopped
working.
> 
>     $ mocp 	# or any other program trying to use alsa
>     ALSA lib pcm_direct.c:812:(snd_pcm_direct_initialize_slave)
requested or auto-format is not available
>     ALSA lib pcm_dmix.c:831:(snd_pcm_dmix_open) unable to initialize
slave
> 
> My ~/.asoundrc is the example configuration for using dmix with the
> ICE1712 chip (found e.g. at
http://alsa.opensrc.org/index.php?page=DmixPlugin).
> 
> # cat ~/.asoundrc
> # our ICE1712 dmix:
> pcm.ossmix {
>     type dmix
>     ipc_key 1024
>     slave {
>     pcm "hw:0,0"
>         period_time 0
>         period_size 1024
>         buffer_size 4096 # buffer size < 6653, but pow(x, 2)
>         rate 44100 # we want to play CDs only
>     }
>     bindings {
>         0 0
>         1 1
>     }
> }
> # Everything shall be dmixed, so redefine "default":
> pcm.!default {
>     type plug
>     slave.pcm "ossmix"
> }
> # OSS via aoss should d(mix)stroyed:
> pcm.dsp0 {
>     type plug
>     slave.pcm "ossmix"
> }
> ctl.mixer0 {
>     type hw
>     card 0
> }


He says that this config worked in ALSA 1.0.9.

He later adds:

> Adding 'format S32_LE' in the original .asoundrc seems to have fixed
> the problem. Apparently the default format (for ice1712 or generally?)
> has been changed to something that doesn't work.

As always, see http://bugs.debian.org/342026 for the complete log.
======================================================================

----------------------------------------------------------------------
 jdthood - 01-02-06 23:07 
----------------------------------------------------------------------
I notice that this patch was not applied in 1.0.11rc2.

----------------------------------------------------------------------
 jdthood - 01-04-06 11:16 
----------------------------------------------------------------------
-------- Original Message --------
Subject: [Pkg-alsa-devel] Bug#342026: alsa-utils: Dmix stopped working.
Resent-Date: Wed, 04 Jan 2006 09:48:13 UTC,	Wed, 04 Jan 2006 01:48:14
-0800
Date: Wed, 04 Jan 2006 10:37:54 +0100
From: Laurent Bonnaud
[...]

Hi,

I have a similar problem with my "Terratec Aureon Sky" soundcard (with
the snd_ice1724 driver).  Here is how it is listed by lspci:

0000:00:0c.0 Multimedia audio controller: VIA Technologies Inc.
VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01)

I have no .asoundrc or /etc/asound.conf file and dmix does not work: a
second program that tries to output sound blocks.

I tried this patch:

https://bugtrack.alsa-project.org/alsa-bug/file_download.php?file_id=969&type=bug

that I applied to the /usr/share/alsa/cards/ICE1724.conf file.  dmix
still does not work.

Let me add that dmix used to work with older versions of alsa and the
sample dmix configuration given
in /usr/share/doc/libasound2/examples/asound.conf_dmix.  This is
therefore a regression.


Package: libasound2
Version: 1.0.10+1.0.11rc1-1

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (100, 'unstable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-2-amd64-k8
Locale: LANG=fr_FR@euro, LC_CTYPE=fr_FR@euro (charmap=ISO-8859-15)

Versions of packages libasound2 depends on:
ii  libc6                         2.3.5-11   GNU C Library: Shared
libraries an

libasound2 recommends no packages.

-- no debconf information

Issue History
Date Modified  Username       Field                    Change              
======================================================================
12-18-05 21:07 jdthood        New Issue                                    
12-18-05 22:30 rlrevell       File Added: ICE1712-dmix.patch                    
12-18-05 22:31 rlrevell       Note Added: 0007072                          
01-02-06 23:07 jdthood        Note Added: 0007394                          
01-04-06 11:16 jdthood        Note Added: 0007413                          
======================================================================




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