Suggested configuration

Monitors

# /etc/X11/xorg.conf.d/10-monitors.conf
Section "Monitor"
	Identifier	"HDMI-1"
	Option		"PreferredMode" "1920x1080"
EndSection

Section "Monitor"
	Identifier	"eDP-1"
	Option		"RightOf" "HDMI-1"
EndSection

Cursors

Install desired cursor theme, by instance Breeze_Obsidian paru -Sy breeze-obsidian-cursor-theme

Then update the gtk config

# ~/.config/gtk-3.0/settings.ini
[Settings]
gtk-cursor-theme-name=Breeze_Obsidian

Then link the system default to desired cursor theme

rm /usr/share/icons/default/cursors
ln -s /usr/share/icons/Breeze_Obsidian/cursors /usr/share/icons/default/cursors

Keyboard

# /etc/X11/xorg.conf.d/00-keyboard.conf
Section "InputClass"
  Identifier  "system-keyboard"
  Option      "XkbOptions" "compose:ralt"
EndSection

Notifications

Install libnotify and notification-daemon, and create the following file

# /usr/share/dbus-1/services/org.freedesktop.Notifications.service
[D-BUS Service]
Name=org.freedesktop.Notifications
Exec=/usr/lib/notification-daemon-1.0/notification-daemon

source