I'm new with Jack Audio. I'm still in the "experimental" first steps.

I use Ubuntu Studio 19.04 now, but I started to use Ubuntu in 2014, so... I have some experience with PulseAudio and Alsa.

My PC is a H61M-P31/W8 (MS-7788) (MSI) Motherboard, with Intel Core i5-3330 CPU @ 3.00GHz, and 8 GB of RAM.

It is a 64 bits installation.

My audio card is included inside the main motherboard and is an Intel Corporation 6 Series/C200 Series Chipset (snd_hda_intel).

My today issue is about...

Each time I set PulseAudio to use my PC audio card with surround sound (7.1), I get that, I get all the surround audio channels working so fine!

But... I cannot to start the Jack server!!!

I'm talking about to start de Jack server with the Ubuntu start-up process.

To start the Jack server, I have to configure the audio system to use the standard Stereo (Front-Left and Front-Right) audio channels, ONLY!!!

The only way I've found to use Jack server is with this kind of connections:

Captura de pantalla_2019-10-06_19-27-43.png

As you can see, it is about stereo audio channels, ONLY.

What do I do wrong?

What did I miss to do?

How can I get surround sound FROM and WITH the Jack server?

Or... Does jack server work only in stereo mode?

Or... Do I have to uninstall PulseAudio at all to get this?

Please... I need to know all about this!!!

Thanks a lot for your time!!!

Blessings and Greetings from Chile!!!