Hello. MOTU has release a new firmware for some AVB cards. https://motu.com/proaudio/index.html#avb-download-additional-resources Tested on a 624 AVB with a Gnu/Linux Debian 9.4 Install with no trouble - how great is this embedded interface, so easy to control the card and updates with Gnu/Linux. Previous firware on the card was the v1.3.1+81 (Release Date 2017-06-21) i've never installed the v1.3.2+102 (Release Date 2017-12-13) Some changes in the interface - Touch control menu added, i do not use it. So far 0 sound/linux troubles here. Tested playback/recording from analog or guitar input and mic input. Changelog. v1.3.4+202 (Release Date 2018-06-20) Introduces new Touch Console™ Fixes an intermittent issue that could cause audio glitch on USB input Improves audio startup timing - All the best. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user