On Tue, May 09, 2017 at 11:00:26AM +0100, Caolan McMahon wrote:
>
> $ usbdevs
> addr 1: xHCI root hub, Intel
> addr 5: AudioQuest DragonFly, AudioQuest inc.
> addr 2: VFS5011 Fingerprint Reader, Validity Sensors
> addr 3: Bluetooth, Intel
> addr 4: Integrated Camera, J8AECPB08
> addr 1: EHCI root hub, Intel
> addr 2: Rate Matching Hub, Intel
>
> $ mplayer beep.wav
> # I hear nothing
>
> $ dmesg
> ...
> uaudio0 at uhub0 port 1 configuration 1 interface 0 "AudioQuest inc.
> AudioQuest DragonFly" rev 1.00/1.20 addr 5
> uaudio0: audio rev 1.00, 2 mixer controls
> audio1 at uaudio0
> uaudio_chan_open: error creating pipe: err=INVAL endpt=0x01
^^^^^^^^^
Saddly, the xhci driver doesn't support isochronous transfers yet.
You could try to disable the xhci driver and see if it works.
