On Wed, May 25, 2005 at 11:45:11PM +0000, Henry Gernhardt III wrote:
> Folks---
>
> I just successfuly compiled GnuRadio and its dependencies. (YAY!!) I
> have, however, run into a slight snag with audio.source(). When running
> anything using this little gem, I get the following (example output from
> spectrum_inversion.py):
>
> audio_alsa_source[hw:0,0]: set_channels failed: Invalid argument
> Traceback (most recent call last):
> File "spectrum_inversion.py", line 37, in ?
> main ()
> File "spectrum_inversion.py", line 32, in main
> fg.start ()
> File
> "/home/henry/gnuradio/lib/python2.4/site-packages/gnuradio/gr/flow_graph.py",
> line 69, in start
> self._setup_connections ()
> File
> "/home/henry/gnuradio/lib/python2.4/site-packages/gnuradio/gr/flow_graph.py",
> line 98, in _setup_connections
> self.validate ()
> File
> "/home/henry/gnuradio/lib/python2.4/site-packages/gnuradio/gr/basic_flow_graph.py",
>
> line 164, in validate
> raise ValueError, ("%s::check_topology (%d, %d) failed" % (m, ninputs,
> noutputs))
> ValueError: <gr_block audio_alsa_source (0)>::check_topology (0, 1) failed
>
> Any ideas as to what may be causing this?
>
> TIA,
>
> Henry C. Gernhardt, III
> KE4PIB
Buggy ALSA driver.
What kind of a audio card are you using?
Eric
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