[HowTo] Rootless Graphical Session (rootless xorg, rootless wayland)

[cscs]

@cscs

• In the case of SDDM (possibly others) there existed a sometimes-bug resulting in the display handoff not always working as expected. In these cases the user must simply manually switch seats, such as by using Ctrl+Alt+F#

This seems to be gone since 0.20.0-2