Linux DAW

Here are my instructions to setup a DAW on Linux, using a Fedora Silverblue distrib.

Requirements

Add the following to your system:

rpm-ostree install btop gnome-session-xsession xhost realtime-setup qpwgraph pavucontrol

Run btop to monitor global system performance.
Run pavucontrol to switch the audio card configuration from HiFi to Direct.
Use qpwgraph to manage connections.
Ensure x11 client like reaper are supported.

Setup realtime group:

# Activate realtime service
for srv in setup entsk; do
    sudo systemctl enable realtime-$srv.service
    sudo systemctl start realtime-$srv.service
done

# Fix for https://docs.fedoraproject.org/en-US/fedora-silverblue/troubleshooting/#_unable_to_add_user_to_group
grep -E '^realtime:' /usr/lib/group | sudo tee -a /etc/group

sudo usermod -a -G realtime $USER

After reboot, you should have the following limits:

$ ulimit -a
real-time non-blocking time  (microseconds, -R) unlimited
...
max locked memory           (kbytes, -l) unlimited
real-time priority                  (-r) 99