ALSA “dmix plugin supports only playback stream” error when using dmix on beagleboard












1















On a Beagleboard, I need it to play sound from several processes.



The default /etc/asound.conf is empty, so I put this dmix example in.



Now sund mixes fine, but when I'm trying to run a process that uses a microphone, I'm getting "(snd_pcm_dmix_open) The dmix plugin supports only playback stream".



What do I fix in the configuration to make software mixing and microphone work?










share|improve this question























  • Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:32
















1















On a Beagleboard, I need it to play sound from several processes.



The default /etc/asound.conf is empty, so I put this dmix example in.



Now sund mixes fine, but when I'm trying to run a process that uses a microphone, I'm getting "(snd_pcm_dmix_open) The dmix plugin supports only playback stream".



What do I fix in the configuration to make software mixing and microphone work?










share|improve this question























  • Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:32














1












1








1








On a Beagleboard, I need it to play sound from several processes.



The default /etc/asound.conf is empty, so I put this dmix example in.



Now sund mixes fine, but when I'm trying to run a process that uses a microphone, I'm getting "(snd_pcm_dmix_open) The dmix plugin supports only playback stream".



What do I fix in the configuration to make software mixing and microphone work?










share|improve this question














On a Beagleboard, I need it to play sound from several processes.



The default /etc/asound.conf is empty, so I put this dmix example in.



Now sund mixes fine, but when I'm trying to run a process that uses a microphone, I'm getting "(snd_pcm_dmix_open) The dmix plugin supports only playback stream".



What do I fix in the configuration to make software mixing and microphone work?







audio alsa embedded-linux beagleboard






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Feb 4 '14 at 12:41









Victor SergienkoVictor Sergienko

366419




366419













  • Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:32



















  • Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:32

















Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

– Victor Sergienko
Feb 5 '14 at 14:32





Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

– Victor Sergienko
Feb 5 '14 at 14:32










1 Answer
1






active

oldest

votes


















0














The dmix plugin works only for playback devices.



To be able to have a device that uses dmix for playback and does something else for capturing, you have to use the asym plugin to define different plugins for playback/capture.






share|improve this answer





















  • 1





    Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:31











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1 Answer
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active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














The dmix plugin works only for playback devices.



To be able to have a device that uses dmix for playback and does something else for capturing, you have to use the asym plugin to define different plugins for playback/capture.






share|improve this answer





















  • 1





    Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:31
















0














The dmix plugin works only for playback devices.



To be able to have a device that uses dmix for playback and does something else for capturing, you have to use the asym plugin to define different plugins for playback/capture.






share|improve this answer





















  • 1





    Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:31














0












0








0







The dmix plugin works only for playback devices.



To be able to have a device that uses dmix for playback and does something else for capturing, you have to use the asym plugin to define different plugins for playback/capture.






share|improve this answer















The dmix plugin works only for playback devices.



To be able to have a device that uses dmix for playback and does something else for capturing, you have to use the asym plugin to define different plugins for playback/capture.







share|improve this answer














share|improve this answer



share|improve this answer








edited Feb 5 '14 at 15:07

























answered Feb 5 '14 at 9:17









CL.CL.

1,301910




1,301910








  • 1





    Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:31














  • 1





    Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

    – Victor Sergienko
    Feb 5 '14 at 14:31








1




1





Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

– Victor Sergienko
Feb 5 '14 at 14:31





Thanks. Maybe I wasn't clear - I don't need to mix a microphone signal, I only want it to work. Currently, it doesn't, at least for some programs.

– Victor Sergienko
Feb 5 '14 at 14:31


















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