Enable Unattended RustDesk Access on Wayland

Ubuntu uses GNOME on Wayland by default. RustDesk works well once the desktop session is running, but unattended access can become awkward around the graphical login screen. On my Ubuntu 26.04 system, the practical solution was to use an X11-based LightDM login screen while keeping the normal Ubuntu GNOME Wayland desktop after login: LightDM + Slick Greeter + X11 ↓ Ubuntu + GNOME + Wayland This…