KDE Plasma 5.17 is not detected. On ealier versions of KDE, NoMachine looks for /usr/bin/startkde when launching a KDE desktop. This has changed with the release of Plasma. Possible errors are: "Oops! Cannot run startkde" or "Cannot detect any display running".

The problem has been reproduced on Arch Linux and openSUSE Tumbleweed.

Workaround:

- edit /usr/NX/etc/node.cfg, and change the following key:

DefaultDesktopCommand "env -u WAYLAND_DISPLAY /usr/bin/dbus-launch --sh-syntax --exit-with-session /usr/bin/startplasma-x11"