Outputs cannot be connected from Web UI about mod-ui HOT 6 CLOSED

Have you started the UI like this:

MOD_APP=1 MOD_LIVE_ISO=1 ./server.py

?
The ports that Jack connects are handed over as strings. Without the above environment variables set the wrong output port names are assumed and connection fails.
Please comment if this solves your problem.

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I installed mod-control, mod-iso, mod-app, mod-host and mod-ui with all dependencies using my package manager and the KXStudio mod repositories, so I haven't been running the python scripts directly.

I have tried running the web UI from the mod-control application as well as "mod-ui" on the command line, but the latter fails to connect to jack. Connection is refused but the jack log doesn't give much info as to why. Running from the control panel works but the playback ports are not connected.

I had a look at the jack log and the difference is that host-ui tries to connect to the non-existent ports "mod-monitor:in_1" and "mod-monitor:in_2" while mod-app correctly connects to "system:playback_1" and "system:playback_1".

I have tried exporting the variables you mention before running but it makes no difference. I also tried setting MOD_DEV_ENVIRONMENT and MOD_DEV_HOST to 0, as suggested by FalkTX on the forum.

What I'm trying to do to run mod-ui headless on an old laptop with a broken screen and control it from another computer or a smartphone. I know this is not the purpose of this project so my expectations are low but it would be fun to get it up and running, proving the point to my Mac loving band members that you can actually do cool stuff with linux too. :)

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Actually, it would be optimal to run mod-host stand-alone with a preset and just control it with midi, but I figuring out how to even get mod-host to do what I want it to is slow...

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I run

$ start-jack-the-way-you-like.sh
$ cd $GITHUB/mod-host
$ ./mod-host -n -p 5555 -f 5556
...
mod-host ready!

Then in another terminal

$ cd $GITHUB/mod-ui
$ source modui-env/bin/activate
(modui-env) $ MOD_APP=1 MOD_LIVE_ISO=1 MOD_DEV_ENVIRONMENT=0 ./server.py

and I can connect to the system outputs. My first system output is called system:playback_1.

You can't control mod-host via MIDI. But since you are looking for a LV2 host, have you tried Carla?
You can run it headless with the --no-gui option. I would expect carla-control to be the remote companion. Unfortunately the --help option seems to be copy/paste and does not give me a clue. Most likely @falkTX could help with the usage.

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You are entirely right that what I'm actually looking for is a headless lv2 host. I got kind of stuck on the fact that I'm using it with an electric guitar and didn't realize that I has the solution literally right before my eyes since I use Carla all the time with a synth for spontaneous noodling on my midi keyboard and a system wide limiter to keep me from getting evicted. :) Thank you so much for that insight! I know exactly what to do now.

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Cool! You're welcome!

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