Hello
I installed debian 9 + xfce on my laptop (HP probook 440)
then I tried to add language using a quide(https://wiki.archlinux.org/index.php/Keyboard_configuration_in_Xorg).
So i created /etc/X11/xorg.conf.d/00-keyboard.conf and wrote there such text:
Section "InputClass"
Identifier...
For those w/ Ubuntu 17.04 (and earlier versions of Ubuntu), install xfce easily with:
Open a terminal and type:
sudo apt update
sudo apt install xfce4
Top/Right in Unity, click the gear, then 'logout'
When logging back in, click the right-arrow next to your name and choose 'xfce session'...