Hello,

I want to kindly ask for your assistance helping me getting the Behringer
FCA610 (connected via USB) to work[1]. I got as far as successfully playing
a stereo wav file with aplay (aplay -D plughw:CARD=FCA610,DEV=0 test.wav)
on channels 1+2 and the headphone output.

The issue I'm facing:
When I select the device in alsamixer I can see only one control named
"Clock Selector", which might be why PulseAudio also cannot pick up the
device.

cat /proc/asound/FCA610/usbmixer
USB Mixer: usb_id=0x13970003, ctrlif=0, ctlerr=0
Card: BEHRINGER FCA610 at usb-0000:00:14.0-2, high speed
  Unit: 211
    Control: name="Clock Selector", index=0
    Info: id=211, control=1, cmask=0x0, channels=1, type="U8"
    Volume: min=1, max=3, dBmin=0, dBmax=0

I currently use Ubuntu 14.04 (Kernel 3.13) and already submitted a bug
report[2] on Launchpad with more information some months ago, but it didn't
get much attention. I have also recently installed and tried the device
with Fedora Heisenbug, with the same result.

I recently found out that some users can successfully use this device (and
the bigger FCA1616) with JACK on Debian[3]. So the device seems to be
supported by the drivers, but may need some additional configuration bits
to be added, so that ALSA can present controls for the input and output
channels in alsamixer and PulseAudio in turn would be able to pick it up
and create another audio sink.

I'm looking forward to provide you all the information you need.


With kind regards, Benjamin



1: http://www.behringer.com/EN/Products/FCA610.aspx
2: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1198577
3:
http://www.musiker-board.de/reviews-tests-rec/552010-review-interface-behringer-firepower-fca610.html#post6798617
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