>Hi, this may well be nothing to do with alsa but I thought you may know 
>what is happening.
>If I make a system call from one thread whilst recording or playing in 
>another thread using the alsa lib, then when I try to snd_pcm_close I get:
>
> >ALSA lib pcm_hw.c:145:(snd_pcm_hw_hw_free) SNDRV_PCM_IOCTL_HW_FREE 
>failed: File >descriptor in bad state

i think we need to see code.


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