LXDM

LXDM is a DisplayManager (handles login). It's fairly lightweight/standalone, and it is often found within a distro's official repos.

Documentation

official lxde wiki	https://wiki.lxde.org/en/LXDM
arch-wiki	https://wiki.archlinux.org/index.php/LXDE

NOTE:

LXDM does not seem to have any official docs, nor a man page.

Locations

main config	/etc/lxdm/lxdm.conf
themes	/usr/share/lxdm/themes

Install

sudo pacman -S lxdm
pacaur -S lxdm-themes

sudo systemctl enable lxdm

Configuration

/etc/lxdm/lxdm.conf

session=/usr/bin/xmonad
numlock=1
gtk_theme=MediterraneanDarkest
theme=Archlinux
bg=/usr/share/backgrounds/default.png