Ionica Bizau wrote: > When I run the first command: > > $ rmmod snd-usb-audio > rmmod: ERROR: Module snd_usb_audio is in use Exit all programs (such as PulseAudio) that might be using the device. Alternatively, add the line options snd-usb-audio ignore_ctl_error=1 to some .conf file in /etc/modprobe.d/, and reboot. Regards, Clemens