alsa-project/alsa-plugins issue #39 was opened from steeley: trying to send to the ALSA device aaf0. pI cm4 with kernel setup to support avb/tsn correctly. PCIe i210 network card is the interface set up correctly according to: https://tsn.readthedocs.io/avb.html Error is: `sudo speaker-test -p 2500 -F S16_BE -c 2 -r 48000 -D aaf0 speaker-test 1.1.9 Playback device is aaf0 Stream parameters are 48000Hz, S16_BE, 2 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 1 to 206158430 Period size range from 0 to 206158431 Requested period time 2500 us Periods = 4 was set period_size = 120 was set buffer_size = 480 0 - Front Left ALSA lib pcm_aaf.c:670:(aaf_tx_pdu) Failed to send AAF PDU Write error: -5,Input/output error xrun_recovery failed: -5,Input/output error Transfer failed: Input/output error ` Issue URL : https://github.com/alsa-project/alsa-plugins/issues/39 Repository URL: https://github.com/alsa-project/alsa-plugins