RuntimeError: audio_oss_sink

GNU Radio
1

I just installed gnuradio using pybombs, and the install appeared to
complete with no errors.

When trying to run dial_tone.py, I receive the following error:

audio_oss_sink: /dev/dsp: No such file or directory
Traceback (most recent call last):
File “./dial_tone.py”, line 61, in
my_top_block().run()
File “./dial_tone.py”, line 55, in init
dst = audio.sink(sample_rate, options.audio_output)
File
“/home/aryoung/work/target/lib/python2.7/dist-packages/gnuradio/audio/audio_swig.py”,
line 122, in make
return _audio_swig.sink_make(*args, **kwargs)
RuntimeError: audio_oss_sink

I have tried using the flags ‘-O hw:0,0’ and ‘-O plughw:0,0’ with no
success. I am running on Ubuntu 12.04 64bit, and have verified that the
audio works otherwise (played some internet radio.)

Any ideas about what’s going on here?

Thanks,
Alex Y.

2

Hi Alex,
the dial_tone.py that comes with my version of GR from the git
(docs/exploring-gnuradio/dial_tone.py) uses the audio_sink, and not the
audio_oss_sink, and works quite fine on an alsa-only system.
Generally, when I grep my git repo for “oss_sink”, only
gr-audio/lib/oss/oss_sink.cc matches. Most probably you’re using an
ancient version of that script, where did you get that?

Greetings,
Marcus