When testing the server on SLES 15 I noticed that it doesn't always start the graphical installer in situations where it technically should be able to. If you run install-server as a non-root user, you get prompted to provide the root password, and then the graphical installer starts. But if you make install-server run as root directly, it starts in text mode. I tried different variants of running as sudo: * "sudo install-server" * "sudo -s", and then running install-server * "sudo su", and then running install-server All these had the same result, no graphical installer. I would guess that this is a SLES issue and not a ThinLinc issue, but maybe it's worth taking a look at anyway.
I tested running install-server after logging in to a Gnome session as root, and then the graphical installer starts.
This is likely a Wayland vs X11 issue, rather than SLES 15 vs other distributions. Historically using sudo hasn't worked since $DISPLAY is dropped. Using "sudo -E" is generally required. Some more testing is probably prudent.
