The issue is resolved! It is a problem with the Raspberry Pi's USB-Bus and can be fixed by adding dwc_otg.fiq_fsm_enable=0 to the /boot/cmdline.txt. I have the information from here: https://github.com/raspberrypi/linux/issues/888 ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user