SUMMARY STEPS TO REPRODUCE 1. Remove the mention of --xwayland from plasma-kwin_wayland.service OBSERVED RESULT It results in a 30-second long waiting period before the plasma environment appears on the screen EXPECTED RESULT The plasma environment should appear on the screen almost immediately SOFTWARE/OS VERSIONS KDE Plasma Version: either plasma 6.0.80 from the KDE Neon Unstable edition or plasma 6.0.3 ADDITIONAL INFORMATION: If I want to disable the Xwayland-on-demand feature, then removing the mention of --xwayland from plasma-kwin_wayland.service results in a 30-second long waiting period before the plasma environment appears on the screen. It looks like the wayland session still depends on ksmserver which in turn depends on the proper functioning of Xwayland. The wayland session's hard dependency on ksmserver should be removed.
This is not supported. Disabling the splash screen might be enough for your use case.