I didn't copy the name down right it should be: alsa_output.usb_device_ffffffff_ffffffff_noserial_alsa_playback_0 Note the missing if0. HAL hasn't picked the USB device config to use yet. When the device is working it has the if0 in the name: alsa_output.usb_device_471_155_noserial_if0_alsa_playback_0 -- Jon Smirl jonsmirl at gmail.com