GDM configuration storage

[daemon]
AutomaticLoginEnable=False
# Uncomment the line below to force the login screen to use Xorg
#WaylandEnable=false
DefaultSession=gnome-xorg.desktop

[security]

[xdmcp]

[chooser]

[debug]
# Uncomment the line below to turn on debugging
#Enable=true

------------------------------

cat /etc/gdm/custom.conf

# GDM configuration storage

[daemon]
AutomaticLoginEnable=False
# Uncomment the line below to force the login screen to use Xorg
#WaylandEnable=false
DefaultSession=gnome-xorg.desktop

[security]

[xdmcp]

[chooser]

[debug]
# Uncomment the line below to turn on debugging
#Enable=true
---------------------------------------------------------------
cat /lib/udev/rules.d/61-gdm.rules    

# disable Wayland on Hi1710 chipsets
ATTR{vendor}=="0x19e5", ATTR{device}=="0x1711", GOTO="gdm_disable_wayland"

# disable Wayland if modesetting is disabled
KERNEL!="card[0-9]*", GOTO="gdm_nomodeset_end"
SUBSYSTEM!="drm", GOTO="gdm_nomodeset_end"
# but keep it enabled for simple framebuffer drivers
DRIVERS=="simple-framebuffer", GOTO="gdm_nomodeset_end"
IMPORT{cmdline}="nomodeset", GOTO="gdm_disable_wayland"
LABEL="gdm_nomodeset_end"

# Disable wayland when nvidia modeset is disabled or when drivers are a lower
# version than 470,
# For versions above 470 but lower than 510 prefer Xorg,
# Above 510, prefer Wayland.
KERNEL!="nvidia_drm", GOTO="gdm_nvidia_drm_end"
SUBSYSTEM!="module", GOTO="gdm_nvidia_drm_end"
ACTION!="add", GOTO="gdm_nvidia_drm_end"
# disable wayland if nvidia-drm modeset is not enabled
ATTR{parameters/modeset}!="Y", GOTO="gdm_disable_wayland"
# disable wayland for nvidia drivers versions lower than 470
ATTR{version}=="4[0-6][0-9].*|[0-3][0-9][0-9].*|[0-9][0-9].*|[0-9].*", GOTO="gdm_disable_wayland"
# For nvidia drivers versions Above 510, keep Wayland by default
ATTR{version}=="[5-9][1-9][0-9].*", GOTO="gdm_end"
# For nvidia drivers versions 470-495, prefer Xorg by default
GOTO="gdm_prefer_xorg"
LABEL="gdm_nvidia_drm_end"

GOTO="gdm_end"

LABEL="gdm_prefer_xorg"
RUN+="/usr/lib/gdm-runtime-config set daemon PreferredDisplayServer xorg"
GOTO="gdm_end"

LABEL="gdm_disable_wayland"
RUN+="/usr/lib/gdm-runtime-config set daemon WaylandEnable false"
GOTO="gdm_end"

LABEL="gdm_end"
------------------------------------

cat /etc/environment
#
# This file is parsed by pam_env module
#
# Syntax: simple "KEY=VAL" pairs on separate lines
#
QT_QPA_PLATFORM=wayland
_JAVA_AWT_WM_NONREPARENTING=1
MOZ_ENABLE_WAYLAND=1 
XDG_SESSION_TYPE=wayland
EDITOR=/usr/bin/micro
BROWSER=firefox
TERM=alacritty
MAIL=geary
QT_QPA_PLATFORMTHEME=qt5ct
--------------------------------------------------