Developer Images

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Revision as of 08:13, 9 September 2021 by FalkTX (talk | contribs) (→‎Instructions)
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This page contains links to the latest developer images.
They are useful for developers and plugin creators, as they contain a few extra things not present on the default builds.
These include:

Release links

MOD Duo X: modduox-v1.10.4.2398.tar
MOD Dwarf: moddwarf-v1.10.4.2397.tar

Useful links



Carla runs by default as internal JACK client with OSC enabled.
This makes it possible to connect remotely over OSC, using Carla-Control.

Note that at this point in time Carla-Control does not fetch the plugin list from the remote instance, so the available plugins shown in the add-plugin dialog will your local ones, not the MOD ones.
It is still useful as a way to visualize the entire internal JACK connections.

To connect, first open Carla-Control and click its "connect" toolbar button.
Use the MOD IP as remote host (that is, and set TCP and UDP ports as 22752 (the default).


MOD-SDK runs at port 9000, so you can access it using
The deploy tab is pretty useless there, as the bundles are always running locally.

Note that MOD-SDK is a few releases behind in terms of plugin-supported features compared to MOD-UI (our webserver and session management tool).
The preview of a few plugins will not look identical to their actual view on the pedalboard.
And LV2 patch parameters are not supported yet.


Valgrind is available to debug plugins more easily, in terms of memory issues at least.

In order to make this useful we need to stop the main audio server and host and run it manually within valgrind, so we catch any errors.
We need to increase the buffer size as valgrind makes things run much slower, 128 frames is too fast for it.
Note that not all plugins work reliably with higher buffer sizes, so try to limit the amount of plugins in use during this mode.

Stopping and starting audio server + plugin host using valgrind can be done with:

# stopping jack2, run it a few times if jackd complains server already active
systemctl stop jack2

# setting up environment
source /etc/mod-hardware-descriptor.env

# starting jackd with the typical JACK clients
valgrind jackd -r -t 500 -C /etc/jack-internal-session.conf -d alsa -d hw:0 -r 48000 -p 1024

There will be a few warnings/errors regarding epoll_ctl which comes from ableton link, ignore them.