Step 1
aptitude install xrdp
Step 2
aptitude install xfce4
Step 3
echo xfce4-session > ~/.xsession
Step 4
I have changed the /etc/xrdp/startwm.sh
file:
Step 4.1
I have removed the following lines:
test -x /etc/X11/Xsession && exec /etc/X11/Xsession
exec /bin/sh /etc/X11/Xsession
Step 4.2
I have added the following line to the end:
startxfce4
Step 5
service xrdp restart
Step 6
Then I have connected to Ubuntu 18.04 desktop from using the «Remote Desktop» application in Windows 7.