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[Discuss-gnuradio] alsa problem

From: Andreas Ladanyi
Subject: [Discuss-gnuradio] alsa problem
Date: Mon, 25 May 2015 12:15:33 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

Hi together,

i am using grc The system is odroid with ubuntu 14. I tested the alsa system with aplay and the sound works.

When i start my project on odroid i get the following error message. On my desktop pc with grc / ubuntu 14 the grc alsa works.

INFO: Audio sink arch: alsa
ERROR: [default]: snd_pcm_hw_params failed: Invalid argument
Traceback (most recent call last):
File "/home/odroid/gr-rds-master_rds2/apps/rds_rx.py", line 421, in <module>
File "/usr/local/lib/python2.7/dist-packages/grc_gnuradio/wxgui/top_block_gui.py", line 73, in Start
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 106, in start
    top_block_start_unlocked(self._impl, max_noutput_items)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/runtime_swig.py", line 4742, in top_block_start_unlocked
    return _runtime_swig.top_block_start_unlocked(*args, **kwargs)
RuntimeError: check topology failed on audio_alsa_sink(54) using ninputs=2, noutputs=0

Andy ideas ? Thanks in advance.


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