On Thu, Jan 15, 2009 at 01:52:08PM +0200, Sebastiaan Heunis wrote: > Hi > > I have a problem with the audio sink. I'm playing around with the > analysis_filterbank block. I have a GUI allowing the user to pick a > channel. That channel then gets connected to an FM demodulator,volume > control and finally an audio sink. At the start of the app, I > initialise everything and the audio sink works. As soon as I change a > channel by reconnecting everything, I get this error: > > audio_alsa_sink[plughw:0,0]: snd_pcm_hw_params failed: File descriptor > in bad state > terminate called after throwing an instance of 'std::runtime_error' > what(): check topology failed on audio_alsa_sink(8) using > ninputs=1, noutputs=0 > Aborted > > Can someone please tell me what might be wrong? > > Thanks. > Sebastiaan
That's a bug in the implementation of gr-audio-alsa. If you look in the code you'll find a couple of FIXMEs. One of those is the thing you've stumbled on to. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
