Switching Display Manager in Ubuntu – GDM, LightDM & SDDM
Once the Linux desktop system is started, you see a login window. This is displayed by the Display manager….
gdm
How To Change The GDM3 Login Screen (Greeter) GTK Theme And Background Image Using gdm-tools
gdm-tools is, like its name suggests, a set of command line tools to change the look of the GNOME…