On Wed, 4 Jan 2023 at 02:14, Michael Ralston <michael@xxxxxxxxxxxxx> wrote: > > On Wed, 4 Jan 2023 at 02:13, Takashi Iwai <tiwai@xxxxxxx> wrote: > > > > That's weird. Is snd_usb_audio driver bound with the device at all? > > That is, does it appear in /proc/asound/cards? > > > > Yes, it's there. > > 0 [V49 ]: USB-Audio - V49 > Alesis V49 at usb-0000:08:00.1-3, full speed > 1 [NVidia ]: HDA-Intel - HDA NVidia > HDA NVidia at 0xfc080000 irq 154 > 2 [U192k ]: USB-Audio - UMC404HD 192k > BEHRINGER UMC404HD 192k at usb-0000:08:00.1-4, high speed > 3 [Generic ]: HDA-Intel - HD-Audio Generic > HD-Audio Generic at 0xfca00000 irq 156 Also lsusb shows this... |__ Port 4: Dev 5, If 0, Class=Audio, Driver=snd-usb-audio, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 |__ Port 4: Dev 5, If 1, Class=Audio, Driver=snd-usb-audio, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 |__ Port 4: Dev 5, If 2, Class=Audio, Driver=snd-usb-audio, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 |__ Port 4: Dev 5, If 3, Class=Audio, Driver=snd-usb-audio, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 |__ Port 4: Dev 5, If 4, Class=Audio, Driver=snd-usb-audio, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 |__ Port 4: Dev 5, If 5, Class=Vendor Specific Class, Driver=, 480M ID 1397:0509 BEHRINGER International GmbH /sys/bus/usb/devices/1-4 /dev/bus/usb/001/005 -- Michael