My machine is a Lenovo IdeaCenter A510 Specs:
pkg install xorg xfce firefox-esr thunderbird tmux irssi vim sudo tigervnc-server
Once all the basics are installed:
pkg install drm-kmod && sysrc kld_list="amdgpu"
I am not using X directly but in a VNC so
echo "startxfce4" > ~/.xinitrc echo "startxfce4" >> ~/.vnc/xstartup
Edit the file ~/.vnc/xstartup and comment or remove the twm & Now run the vnc server
vncserver
And hopefully your system will load xfce and youll be able to connect