[alsa-devel] alsa-lib, dmix, and snd_pcm_open_conf function

[Simon Tremblay]

Jaroslav Kysela a écrit :
> 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