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[Discuss-gnuradio] E100 - dial_tone.py error


From: Divya Paul
Subject: [Discuss-gnuradio] E100 - dial_tone.py error
Date: Tue, 8 Mar 2011 10:12:25 -0800 (PST)

Hi,

I am new to using GNUradio and the USRP hardware. I installed GNUradio, GRC and UHD on the E100. I have run the examples for the UHD and it is working without any problem. From the GNUradio examples, When I tried running the dial_tone.py, I get the following error: 

audio_alsa_sink[hw:0,0]: Device or resource busy
Traceback (most recent call last):
  File "./dial_tone.py", line 55, in <module>
    my_top_block().run()
  File "./dial_tone.py", line 48, in __init__
    dst = audio.sink (sample_rate, options.audio_output)
  File "/usr/local/lib/python2.6/site-packages/gnuradio/audio_alsa.py", line 329, in sink
    return _audio_alsa.sink(*args, **kwargs)
RuntimeError: audio_alsa_sink

Also,in python, the importing of modules is working:
Python 2.6.5 (r265:79063, Dec 14 2010, 12:41:31) 
[GCC 4.5.2 20101204 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from gnuradio import gr
>>> from gnuradio import audio
>>> 

When I go to System--> Preferences --> Sound, a window pops up that says 'Waiting for sound system to respond'. Does this mean that there is no sound system? 
How can I verify that my GNUradio install on the E100 is done right? 

Thanks,
Divya.


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