This works well when using TigerVNC.

https://kx.studio/Repositories

Current version (visit site above for latest)

sudo apt-get update
sudo apt-get install gpgv wget
wget https://launchpad.net/~kxstudio-debian/+archive/kxstudio/+files/kxstudio-repos_11.2.0_all.deb
sudo dpkg -i kxstudio-repos_11.2.0_all.deb

sudo apt-get update

sudo apt-get install carla carla-bridge-linux64 carla-data -y

Due a package renaming issue some plugins will not install so we need to fake the old name.

sudo apt-get install equivs -y
mkdir -p ~/etc && cd ~/etc
vim libgdk-pixbuf-fake.control

Section: misc
Priority: optional
Standards-Version: 4.6.2
Package: libgdk-pixbuf2.0-0
Version: 2.42.12
Architecture: all
Depends: libgdk-pixbuf-2.0-0
Description: FIX pixbuf naming

equivs-build libgdk-pixbuf-fake.control
sudo dpkg -i libgdk-pixbuf2.0-0_2.42.12_all.deb

NB Some plugins depend on the fix given above.

sudo apt install helm calf-plugins fluidsynth x42-plugins -y
sudo apt install lsp-plugins
sudo apt install guitarix

https://github.com/midilab/jc303

https://x42-plugins.com/x42/x42-stepseq-8x8

Either use qjackctl or create a user service.

sudo apt install jackd2 jack-example-tools qjackctl a2jmidid

mkdir -p ~/.config/systemd/user

jackd.service

[Unit]
Description=JACK Audio Daemon
After=sound.target

[Service]
Type=simple
Environment="JACK_NO_AUDIO_RESERVATION=1"
ExecStart=/bin/jackd -dalsa -dhw:U192k -r48000 -p128 -n3
Restart=on-failure

[Install]
WantedBy=default.target

systemctl --user start jackd.service

a2jmidid.service

[Unit]
Description=JACK MIDI Bridge
After=jackd.service
BindsTo=jackd.service

[Service]
Type=simple
ExecStart=/usr/bin/a2jmidid -e
Restart=on-failure
RestartSec=2

[Install]
WantedBy=jackd.service

systemd

systemctl daemon-reload
systemctl --user enable jackd.service
systemctl --user enable a2jmidid.service

Debian13 pixbuf