Ubuntu and GNOME require special packages and settings in order to properly run remote FastX sessions. Unfortunately Ubuntu does not install all the GNOME requirements by default
Ubuntu 20.04/24.04
The following installation has been verified on Ubuntu 20 and 24
sudo apt-get update
sudo apt-get install -y gnome-session gjs dbus-x11
Install FastX by following the instructions and download links at https://www.starnet.com/download/
# FastX 4
sudo apt-get install -y fastx4-server
FastX 4 gnome.ini
In FastX 4 applications and profiles have been merged into 1 .ini file
The default gnome.ini file should look like the following
command=/etc/X11/Xsession gnome-session
geometry=
icon=gnome.png
name=Gnome
startDbus=true
strict=true