Ardour, Jack, ALSA and HW-Audio

Dear Experts,

I am just a Newbee, trying to introduce myself to Ardour. But my problem prior getting in touch at all, is the interconnection between Ardour & Roland Studio Capture.

What I achieve is:

  1. Starting Ardour --> Project Configuration
  2. Defining the following:
    2.1. Audiosystem: ALSA
    2.2. Eingangsgerät: STUDIO-CAPTURE
    2.3. Ausgangsgerät: STUDIO-CAPTURE
    2.4. Samplerate: 96kHz
    2.5. Puffergröße: 4096 Samples
    2.6. Perioden: 2
  3. At JACK:
    3.1. Treiber: alsa
    3.2. MIDI-Treiber: raw
    3.3. Abtastrate: 96000
    3.4. Frames/Periode: 4096
    3.5. Perioden: 2.
    => To me, this looks like:
    (a) Roland Studio Capture Interface has been recognised in general;
    (b) the above settings match.
    => Now pressing “start” at Ardour leads to one small Window:
    “Konnte Audiogerät nicht öffnen”.
    => Why?
    => What do I do wrong…?

=> Ideas? Tips? Maybe a link I didn’t find so far…?

PS!:
When I only start JACK Audio Connection Kit, it shows “Läuft – RT – 96000kHz”, and seems to run perfectly.

You made the right choice at step 2.1 (using Ardour’s own ALSA backend).

You do not need to configure, start or use JACK at all. We recommend this now to most new users. JACK is very powerful and vital with certain complex workflows, but for most people, the steps 2.1-2.6 are all you need to do. Just skip the whole of your section 3.

Dear Paul,

thank you so much for your valuable contribution!
I followed our advice and found out the following:

  1. “Audiosystem = ALSA”, then the problem remains the same;
  2. “Audiosystem = JACK”, “ALSA”, “STUDIO-CAPTURE” and the rest,
    then Ardour5 starts!

(Unfortunately, due to lack of time, I directly cannot verify whether I am now able to capture a true Audio Signal or not, but will soon… :slight_smile: )

=> Thank you very much so far!!

I’m fine using ALSA and not Jack. The only thing, however, is that the Carla patchbay can’t seem to find Ardour if one is running ALSA, and, given that Carla is a quick and intuitive way of checking the connections, that seems a pity…?

Carla is specifically a tool intended for use with JACK. It has no relevance for non-JACK scenarios.

When using Ardour and its ALSA backend, go to Window > Audio Connections

I think you meant Catia (the JACK patchbay).

Carla is a plugin-host, and there is also a plugin version of it. You could use Carla as plugin on a track or bus in Ardour to create a modular network of pluins.