[arch-general] alsa, hdmi, and the invisible magic output

Damjan Georgievski gdamjan at gmail.com
Fri Dec 3 13:21:46 EST 2010


> Also, when trying to open a file with alsaplayer, if vlc or banshee are
> already playing something, that error pops out:
>
> ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
> snd_pcm_open: Device or resource busy (plug:dmix)
> [...]
> NOTE: THIS IS THE NULL PLUGIN. YOU WILL NOT HEAR SOUND!!
>
> I don't understand.
> As far as I remember, I was always able to play a game while watching a
> video and/or playing music.
> What happends?

lsof /dev/snd/*

this command will tell you what program has the sound card open.

-- 
damjan


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