Introduction
For my setup
Login Manager (or display manager)
To check currernt
systemctl status display-manager
sudo dnf install lightdm lightdm-gtk
sudo setenforce 0
sudo systemctl disable sddm
sudo systemctl enable lightdm
sudo nvim /etc/lightdm/lightdm-gtk-greeter.conf
[greeter]
background=/usr/share/backgrounds/file.png
theme-name=Adwaita-dark
icon-theme-name=Papirus
font-name=Sans 11
sudo chmod 644 path/to/file.png
sudo cp path/to/file.png /usr/share/backgrounds/file.png
sudo systemctl restart lightdm