1) Install xrdp-git AUR and xorgxrdp-git AUR from:
2) Edit .xinitrc like so:
# me - comment out below lines
#twm &
#xclock -geometry 50x50-1+1 &
#xterm -geometry 80x50+494+51 &
#xterm -geometry 80x20+494-0 &
#exec xterm -geometry 80x66+0+0 -name login
# me - start xfce:
exec dbus-launch xfce4-session
this was taken from below:
3) Select Xvnc instead of Xorg in RDP session login