Am 01.12.24 um 11:50 schrieb Aleksej: > The fact that your interface is not listed in lsusb is quite strange. > For the experiment, I even tried booting from the Guix installation > image, and my interface was listed in lsusb. Are you sure your interface > is working? Could you try it with another USB port, PC, or distribution? Hi Aleksei, now it is listed in lsusb: Native Instruments Komplete Audio 1 but it doesn´t work either. gfp@Tuxedo ~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 006: ID 2109:2812 VIA Labs, Inc. VL812 Hub Bus 003 Device 007: ID 046d:c31c Logitech, Inc. Keyboard K120 Bus 003 Device 008: ID 046d:c077 Logitech, Inc. Mouse Bus 003 Device 009: ID 17cc:1830 Native Instruments Komplete Audio 1 Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 004 Device 003: ID 2109:0812 VIA Labs, Inc. VL812 Hub thanks Gottfried