Hi,
I bought this DAC (In case XMOS+ES9023 Asynchronous I2S USB to fiber coaxial 192K-24BIT USB power)
http://www.ebay.com/itm/ws/eBa…..0948481228
but I have no sound on any output, even though everything looks OK.
DAC is OK works perfect under Windows.

This is my config…..

[email protected]:~$ dmesg
[ 3.534945] usb 1-1.3: new high-speed USB device number 5 using dwc_otg
[ 3.666312] usb 1-1.3: New USB device found, idVendor=20b1, idProduct=2013
[ 3.684779] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3.693706] usb 1-1.3: Product: XMOS USB Audio 2.0
[ 3.711243] usb 1-1.3: Manufacturer: XMOS
[ 3.724821] usb 1-1.3: SerialNumber: 0000

[email protected]:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: X20 [XMOS USB Audio 2.0], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7

[email protected]:~$ amixer
Simple mixer control 'XMOS Clock Selector',0
Capabilities: pvolume pswitch penum
Playback channels: Front Left – Front Right
Limits: Playback 0 – 127
Mono:
Front Left: Playback 127 [100%] [0.00dB] [off]
Front Right: Playback 127 [100%] [0.00dB] [off]
Simple mixer control 'XMOS Clock Selector',1
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 – 127
Mono: Playback 127 [100%] [0.00dB] [off]

[email protected]:~$ amixer info
Card default 'X20'/'XMOS XMOS USB Audio 2.0 at usb-bcm2708_usb-1.3, high speed'
Mixer name : 'USB Mixer'
Components : 'USB20b1:2013'
Controls : 4
Simple ctrls : 2

Any tips

Thank You. That's the clue.
[email protected]:~$ amixer set 'XMOS Clock Selector' unmute on
did the job

I'm wondering why all channels are muted by default?