On 8 September 2010 10:35, Jon Nordby <jono...@gmail.com> wrote: > On 8 September 2010 00:07, l...@jelmail.com <l...@jelmail.com> wrote: >> If I have something on the host using ALSA then the guest complains: >> >> [r...@mycontainer ~]# aplay /usr/share/sounds/alsa/Front_Center.wav >> ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave >> aplay: main:654: audio open error: Device or resource busy > This is when you use lsof/fuser to identify which process is hogging > the device. For debugging you should use something dead simple like > aplay in the host too. Also try configuring the programs/alsa to use a > dmixed plug explicitly. Have you tried using the device from two > containers (and not the host)? > > If neither of that leads to a solution, I would ask alsa people. > I recently realized that since ALSA does mixing in userspace one probably cannot share an alsa device between containers (or host+container) since they do not share userspace. OSSv4 on the other hand does mixing in the kernel and might "just-work". If not, once could use PulseAudio to share one soundcard with several containers.
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