dmix problems with analog out (HDMI out works fine with dmix)

[Robert Krakora <rob.krakora@xxxxxxxxxxxxxxxxxxxxx>]

Hi All,

I am using ALSA 1.0.24 with the attached 
asound.conf.  I am attempting to share (mix) the analog output between 
Asterisk and aplay.  However, when Asterisk is running, my application 
throws an error when attempting to play a wave file via aplay.  If I 
stop Asterisk, aplay plays the wave file just fine.  If I remove the 
asound.conf file, Asterisk and aplay are both happy and share the analog
 output just find with the default ALSA dmix 
implementation.  However, we need this asound.conf to work for us for 
other reasons.  What is wrong with it.  I have even tried replacing dmix
 with dshare and get the same bad behavior.  We are running CentOS 6.0. 
 As a caveat, I am attempting to use dmix with analog audio.  If I use 
it with HDMI audio, it works flawlessly (same asound.conf with tweek to 
specify HDMI).  Thanks in advance for your help.

[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_

Center.wav"
ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument

ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave

aplay: main:660: audio open error: Invalid argument
[root@devkrakorar snd]#

Best Regards,

-- 
Rob Krakora
MessageNet Systems
101 East Carmel Dr. Suite 105
Carmel, IN 46032
(317)566-1677 Ext 212
(317)663-0808 Fax

Attachment: asound.conf
Description: Binary data

Attachment: alsa.conf
Description: Binary data

Attachment: alsa-info.txt.PwOfopSqfX
Description: Binary data

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