[alsa-devel] Unable to open plughw:0,0 from user program.

Hi,

I am unable to use plughw:0,0 as a device string while calling err = snd_pcm_open (&alsa_dev, hw_from_default, SND_PCM_STREAM_PLAYBACK, 0);

The same call works with hw_from_default == 'default', but fails when it is 'plughw:0,0'. The error is cannot open audio device "plughw:0,0" (Device or resource busy)

I am using the latest snapshot of alsa-lib, alsa-lib20070821. I tried debugging but I cannot trace through the macros. As near as I can tell there have been no changes to alsa.conf, and this worked just fine before the latest upgrade alsa package alsa-lib.1.0.14-3

Is this a deliberate change in alsa that is known about, and is there a way to still get the functionality?

Thanks.