Install

dnf install xrdp
systemctl start xrdp

Make backups of original files

cp -f /etc/xrdp/xrdp.ini /etc/xrdp/xrdp.ini.bkup
cp -f /etc/xrdp/sesman.ini /etc/xrdp/sesman.ini.bkup

Use Xorg

sed -i "s/autorun=/autorun=Xorg/g" /etc/xrdp/xrdp.ini

Prevent the error: Listening socket is in wrong state, terminating listener

sed -i "0,/allow_channels=true/{s/allow_channels=true/allow_channels=false/}" /etc/xrdp/xrdp.ini

Start the correct session; ~/.Xinitrc is not needed

echo "PREFERRED=gnome-session" > /etc/sysconfig/desktop

Prevent the error: Could not acquire name on session bus

echo "unset DBUS_SESSION_BUS_ADDRESS; gnome-session" >> /etc/sysconfig/desktop
echo "allowed_users=anybody" > /etc/X11/Xwrapper.config

Restart XRDP

systemctl restart xrdp