[Discuss-gnuradio] searched the mail list but nothing works: audio_alsa_sink[hw:0]: Device or resource busy

When I want to connect the signal to the sound card, an error occurs as below:
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audio_alsa_sink[hw:0]: Device or resource busy
RuntimeError: audio_alsa_sink
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I want the signal to be output to the sound card, but the card is in use.
I tried lsof|grep /snd and kill -TERM the process in using sound card pulseaudio, but doesn't work.
Then I uninstalled the pulseaudio but the problem remains.

I also tried to set the sound sink device name to be: hw:0 / pulse / plughw:0,0  
none works.

Any suggestion?