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Thread: Unable to get a response from USB interface into Ardour 6

  1. #1
    Join Date
    Oct 2011
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    41

    Unable to get a response from USB interface into Ardour 6

    I am not able to see any signal from my USB interfaces in Arour 6.0.0 installed on Ubuntus 20.04. I tested a 1st generation Scarlett 2i4 and a Behringer UMC404. I tested at Kubuntu, Kubuntu with Ubuntu Studio 20.04 ppa and apps installed, and Ubuntu Studio 20.04. I tried connecting the Scarlett directly to Ardour in the Audio/MIDI setup screen, and through JACK and qjackctl as well as JACK and Carla. I tried selecting the Scarlett as the sound card in the alsamixer, and tested the other sound card choices also. I can see a response in pulse audio input (pavucontrol). I can see the Scarlett after lsusb, aplay -l, and cat /proc/asound/cards. I tested this on both a Dell desktop and a Dell laptop. I have also been searching on setting up Carla, JACK, and qjackctl. I've used settings recommended in the Ubuntu Studio manual. Finally I have no problem seeing and recording from either the Scarlett or the Behringer in Ardour 5.12. Any ideas as to how to fix this?

  2. #2
    Join Date
    Oct 2011
    Beans
    41

    Re: Unable to get a response from USB interface into Ardour 6

    I resolved the problem I was having with Ardour 6. In both Ardour 4 and Ardour 5, one could see the strength of the signal going into a track by connecting the track to the proper input (for example, USB interface), then doing whatever to cause a signal (sing into a microphone, strum a guitar, play a note on a keyboard or bass, etc.) There was no need to arm the track in order to see a response. Apparently there was some change made to Ardour 6 whereby one must arm the track in order to see a response on the meter on the track. Once I armed the track, I easily saw a response to the input into my USB device. I did not have to use either JACK or Carla; it worked with ALSA.

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