1 - Le matériel et les pilotes ALSA, FFADO, ...

• /etc/modprobe.d/fast-track-pro.conf

  # IMPORTANT: DO NOT COPY CONTENTS OF THIS FILE TO TEXT EDITOR IF VIEWING FROM WEB BROWSER,
  # JUST SAVE THE FILE TO YOUR COMPUTER!!!
  # OR VIEW THIS FILE IN UNICODE (UTF-8) MODE IF YOU REALLY WANT TO COPY AND PASTE
  # OTHERWISE YOU WILL GET FORMATTING ERRORS AND THE FILE WILL NOT WORK
  #
  # All configurations shown at the bottom of this file will put the Fast Track Pro as device number 5.
  # So in qjackctl or from terminal you will always know that device 5 will be the Fast Track Pro.
  # You can change this device number if necessary by changing the index=5 to another number.
  #
  # Each configuration line has an explanation above it (which should be left commented) so you know how
  # the Fast Track Pro will be running.
  #
  # Only uncomment one line (remove # at start of line) depending how you are going to use your FastTrack Pro.
  #
  # After making changes to this file and saving it you should power off your Fast Track Pro and unload and reload
  # the snd-usb-audio module by doing the following in a root terminal:
  #
  #	modprobe -r snd-usb-audio
  #	modprobe snd-usb-audio
  #
  # If that doesn't work, and you do get an error message saying that the snd-usb-audio module is in use then just
  # reboot your machine.
  # This is why it's better to not have any other USB audio devices connected, because they also get a hold of the
  # snd-usb-audio module.
  #
  # According to the patch, the possible values for the device_setup parameter are the sum of the following numbers:
  #
  #    * 0×01 : use the device_setup parameter, always needed
  #    * 0×02 : enable digital output (channels 3,4)
  #    * 0×04 : use 48kHz-96kHz sampling rate, 8-48 kHz if not used
  #    * 0×08 : 24bit sampling rate
  #    * 0×10 : enable digital input (channels 3,4)
  #
  #===================================================================================================================
  #===================================================================================================================
  #===================================================================================================================
  #
  #                                          CONFIGURATION LINES (ONLY UNCOMMENT ONE):
  #
  #===================================================================================================================
  #===================================================================================================================
  # 24 BIT - 44.1/48 KHz - 2 INPUTS (ANALOG) - 4 OUTPUTS (ANALOG + DIGITAL) - THIS IS THE DEFAULT AND ENABLED:
  #options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x9 index=5 enable=1
  #===================================================================================================================
  #===================================================================================================================
  #
  #===================================================================================================================
  #===================================================================================================================
  # 24 BIT - 88.2/96 KHz - 4 INPUTS (ANALOG + DIGITAL) OR 4 OUTPUTS (ANALOG + DIGITAL) - DUPLEX IS NOT SUPPORTED
  #options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x5 index=5 enable=1
  #===================================================================================================================
  #===================================================================================================================
  #
  #===================================================================================================================
  #===================================================================================================================
  # 24 BIT - 44.1/48 KHz - 2 INPUTS (DIGITAL) - 4 OUTPUTS (ANALOG + DIGITAL)
  #options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x13 index=5 enable=1
  #===================================================================================================================
  #===================================================================================================================
  #
  #===================================================================================================================
  #===================================================================================================================
  # 16 BIT - 44.1/48 KHz - 4 INPUTS (ANALOG + DIGITAL) - 4 OUTPUTS (ANALOG + DIGITAL)
  #options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x0 index=5 enable=1
  #===================================================================================================================
  #===================================================================================================================
  #
  # To use the other Inputs/Outputs if available as shown in the configuration lines above you must use either the
  # alsa_in or alsa_out commands so they become available to JACK and other applications.
  # For example let's say you will run the Fast Track pro with device_setup=0 which makes it run at 16 bit mode
  # and you make qjackctl use the hw:5,1 input then in a terminal you will type:
  # alsa_in -d hw:5,0 to engage the other 2 inputs, then they will appear in your qjackctl connections tab.
  # It doesn't matter if you do it the other way around, like telling qjackctl to use hw:5,0 in that case you will use
  # hw:5,1 with the alsa_in command.
  #
  # Same applies with outputs but with the alsa_out command.
  #
  # Any questions or issues? just send me an e-mail: joegiampaoli@gmail.com
  #
  # Cheers!

#options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x9 index=5 enable=1

options	snd_usb_audio	vid=0x763 pid=0x2012 device_setup=0x9 index=5 enable=1

cat /proc/asound/cards

/usr/bin/jackd -S -P80 -dalsa -r44100 -p128 -n2 -D -Chw:5,1 -Phw:5,0

alsa_out -dhw:5,1