I have an usb audio card which works with a raspberry pi 3 b+ (espeak mainly).
The device works great, but after some time it stops working randomly.
The device is shown, and speaker-test doesn't output errors.
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There's simply no audio output.
This happens randomly, I mean maybe now speaker-test works and when I interrupt the command and restart the test it doesn't output the audio without any errors at all.
The same happens with espeaker for example, which simply hangs without outputting audio at all.
The .asound.rc is set properly after aplay, indeed the device works until stops randomly.
All commands are given by pi user.
Is there any way I can understand what is happening?