Comment 7 for bug 465942

On Sat, Oct 31, 2009 at 1:52 AM, Daniel Chen <email address hidden> wrote:
> Looks like some other application is grabbing /dev/snd/* while PA is, too:
>
> D: alsa-source.c: snd_pcm_mmap_commit: Broken pipe
> D: alsa-source.c: snd_pcm_mmap_commit: Buffer overrun!
> I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_PREPARE failed
> I: (alsa-lib)pcm.c: cannot recovery from overrun, prepare failed:
> Device or resource busy
> E: alsa-source.c: snd_pcm_mmap_commit: Device or resource busy
> I: module.c: Unloading "module-alsa-card" (index: #4).
> D: module-always-sink.c: Autoloading null-sink as no other sinks detected.
> I: sink.c: Created sink 1 "auto_null" with sample spec s16le 2ch
> 44100Hz and channel map front-left,front-right
> I: sink.c:     device.description = "Dummy Output"
> I: sink.c:     device.class = "abstract"
> I: sink.c:     device.icon_name = "audio-card"
> I: source.c: Created source 2 "auto_null.monitor" with sample spec
> s16le 2ch 44100Hz and channel map front-left,front-right
> I: source.c:     device.description = "Monitor of Dummy Output"
> I: source.c:     device.class = "monitor"
> I: source.c:     device.icon_name = "audio-input-microphone"
> D: module-null-sink.c: Thread starting up
>
> So, what's doing that? What'

What's the output from: sudo fuser -v /dev/dsp* /dev/snd/*
when the sound hardware disappears?