Install Nvidia ArchLinux (LightDM)

Configuration nvidia driver For the LightDM display manager

$ sudo pacman -S nvidia nvidia-utils nvidia-settings xorg-server-devel opencl-nvidia

$ sudo nano /usr/lib/modprobe.d/nvidia-utils.conf

..
blacklist nouveau
..

$ sudo nano /etc/X11/xorg.conf.d/10-nvidia-drm-outputclass.conf

..
Section "OutputClass"
    Identifier "intel"
    MatchDriver "i915"
    Driver "modesetting"
EndSection

Section "OutputClass"
    Identifier "nvidia"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "AllowEmptyInitialConfiguration"
    Option "PrimaryGPU" "yes"
    ModulePath "/usr/lib/nvidia/xorg"
    ModulePath "/usr/lib/xorg/modules"
EndSection
..

$ sudo nano /etc/lightdm/display_setup.sh

..
#!/bin/sh
xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto
..

$ sudo nano /etc/lightdm/lightdm.conf

..
display-setup-script=/etc/lightdm/display_setup.sh
..

$ sudo nano /etc/modprobe.d/nvidia-drm-nomodeset.conf

..
options nvidia-drm modeset=1
..

$ sudo mkinitcpio -P

Reboot, Done!