I already hat USB max current enabled and built-in audio disabled.
Now I’ve enabled USB-DAC option in the Squeezelite options, but the result is the same. After about 5h running the radio stream, i got the pulsating sound and have to kill squeezelite.
When starting Squeezelite again, everything is fine so far.
What came to my mind: is it possible that the stream gets played just a little tick too fast (like 48005Hz instead of 48000Hz) by the soundcard and therefore the buffer is empty after some time? how does synchronisation between the mp3 samples and dac samples work?
in the system log file (/var/log/messages) i do see these lines:
Aug 29 13:35:57 Soundanlage kernel: [22744.302005] gpiomem-bcm2835 3f200000.gpiomem: gpiomem device opened.
Aug 29 13:38:01 Soundanlage rsyslogd-2007: action ‘action 17’ suspended, next retry is Tue Aug 29 13:39:31 2017 [try http://www.rsyslog.com/e/2007 ]
the last line appears every 2 minutes. what does that mean?