Re: [Discuss-gnuradio] Error with audio_alsa_sink

[Eric Blossom]

On Mon, Nov 10, 2008 at 03:17:02PM +0000, PAtrick Gerber wrote:
> Hello all,I have some problems with GNURadio and my USRP board when I use the 
> usrp_wfm_rcv demo application. I have the error 
> below:audio_alsa_sink[hw:0,0]: unable to support sampling rate 32000
>   card requested 44100 instead.
> audio_alsa_sink[hw:0,0]: set_period_time_near failed: Argument invalide
> Traceback (most recent call last):
>   File "./usrp_wfm_rcv.py", line 268, in <module>
>     app = stdgui.stdapp (wfm_rx_graph, "USRP WFM RX")
>   File "/usr/lib/python2.5/site-packages/gnuradio/wxgui/stdgui.py", line 36, 
> in __init__
>     wx.App.__init__ (self, redirect=False)
>   File "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py", 
> line 7912, in __init__
>     self._BootstrapApp()
>   File "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py", 
> line 7487, in _BootstrapApp
>     return _core_.PyApp__BootstrapApp(*args, **kwargs)
>   File "/usr/lib/python2.5/site-packages/gnuradio/wxgui/stdgui.py", line 39, 
> in OnInit
>     frame = stdframe (self.flow_graph_maker, self.title, self._nstatus)
>   File "/usr/lib/python2.5/site-packages/gnuradio/wxgui/stdgui.py", line 60, 
> in __init__
>     self.panel = stdpanel (self, self, flow_graph_maker)
>   File "/usr/lib/python2.5/site-packages/gnuradio/wxgui/stdgui.py", line 81, 
> in __init__
>     self.fg = flow_graph_maker (frame, self, vbox, sys.argv)
>   File "./usrp_wfm_rcv.py", line 93, in __init__
>     False)  # ok_to_block
>   File "/usr/lib/python2.5/site-packages/gnuradio/audio_alsa.py", line 228, 
> in sink
>     return _audio_alsa.sink(*args)
> RuntimeError: audio_alsa_sink
> I have tested the mono_tone application with success and I can listen the 
> tone.I have checked that my sound card is not in use by some other 
> application.Do you have any idea ?
> 
> Thanks in advance.Patrick
> 

Try it with the -O plughw:0,0 option

Eric