From mboxrd@z Thu Jan  1 00:00:00 1970
From: Simon Tremblay <bidou@videotron.qc.ca>
Subject: Re: alsa-lib, dmix, and snd_pcm_open_conf function
Date: Thu, 04 Sep 2008 20:27:14 -0400
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Jaroslav Kysela a =E9crit :
> On Mon, 1 Sep 2008, Simon Tremblay wrote:
>
>   =

>> Hi, =

>>
>> I have a problem using dmix on my embedded system (manual installation of
>> alsa-lib 1.0.15)
>>
>> When I play a sound with aplay, it works well.
>>
>> When I try -D dmix or -D plug:dmix parameter, it doesn't work. =

>>
>> The output is: =

>>
>> aplay: main:547: audio open error: Operation not permitted
>>     =

>
> strace will help you. I would look to ipc permissions (alsa.conf):
>
> defaults.pcm.ipc_gid audio
> defaults.pcm.ipc_perm 066
Thanks, but I just want to know where I manage that for IPC? I created =

an audio group and my /dev/snd/* files are in this group and have 0660 =

as permissions.

Simon