Install xorg with XFCE on FreeBSD on Lenovo ThinkPad T460s

Before of all - apply security patches.

Elevate to root:

su -

Install Xorg:

pkg install xorg -y

Configure the X window system - users who will be using the GUI need to be added to the video or wheel groups:

pw groupmod video -m guestuser || pw groupmod wheel -m guestuser

This will add the user to the video group, or if that doesn’t exist, the wheel group.
Next, FreeBSD must be configured to set the video output mode - add to /boot/loader.conf:

kern.vty=vt

Before the X Window Server can be run, a few dependancies will need to be installed:

pkg install drm-kmod

For built-in intel video drivers which are in the Lenovo T460s - add to /etc/rc.conf:

kld_list="i915kms"

Also add the following lines:

moused_enable="YES" 
dbus_enable="YES"

Install XFCE:

pkg install xfce xfce4-goodies xfce4-mixer -y

And login manager:

pkg install lightdm lightdm-gtk-greeter -y

Add this entry to ~/.xinitrc of root user:

exec xfce4-session

Add the lightdm to startup in /etc/rc.conf:

lightdm_enable="YES"

It is safe to reboot now:

init 6