XRDP

Install xrdp

sudo apt update

sudo apt install xrdp X11orgxrdp

Add xrdp user to ssl-cert group

sudo usermod -aG ssl-cert xrdp

Remove client user from render group

sudo gpasswd --delete username render

Disable RenderD128 option

sudo nano /etc/X11/xrdp/xorg.conf

#change to

#Option "DRMDevice" "/dev/dri/renderD128"

Option "DRMDevice" ""

Optional

Remove client user from video group.

Switch to lxde

sudo nano /etc/xrdp/startwm.sh

#comment out the following line

#test -x /etc/X11/Xsession && exec /etc/X11/Xsession exec /bin/sh /etc/X11/Xsession

Add the line

exec /usr/bin/startlxde