I'm testing a USB DAC that seems to work fine except it does not produce sound. The only clue I can find is "config 0 descriptor??" in dmesg below. This DAC needs to be unmuted before it will work but alsamixer says "This sound device does not have any controls." # dmesg ... usb 1-2: new high-speed USB device number 14 using xhci_hcd usb 1-2: device descriptor read/64, error -71 usb 1-2: New USB device found, idVendor=249c, idProduct=9006, bcdDevice= 0.01 usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-2: Product: Computer Audio Design usb 1-2: Manufacturer: Computer Audio Design usb 1-2: config 0 descriptor?? # lsusb ... Bus 001 Device 012: ID 249c:9006 M2Tech s.r.l. Computer Audio Design ... # cat /proc/asound/cards ... 1 [CAD ]: snd-usb-hiface - CAD CAD at usb-0000:00:14.0-2 Any ideas? _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user