as root
Install
apt install budgie-desktop-environment
as user
Enable sloppy focus
gsettings set org.gnome.desktop.wm.preferences focus-mode 'sloppy' gsettings set org.gnome.desktop.wm.preferences raise-on-click true gsettings get org.gnome.desktop.wm.preferences focus-mode gsettings get org.gnome.desktop.wm.preferences raise-on-click
Do not forget to enable workspaces
Super-A Configure Top Panel // Add applet: Workspace Switcher
eventually change the menu icon,
Super-A Configure Top Panel // Budgie Menu Menu Icon /usr/share/icons/ubuntu-mono-dark/actions/24/package-supported.svg
and of course the appropriate keyboard shortcuts e.g.,
Settings -> Keyboard Navigation // Move to workspace 1 ... Super+1 Navigation // Switch to workspace 1 ... Alt+1 Windows // Close window ... Alt+Q Windows // Maximize window ... Alt+` Windows // View split on left ... Alt+Left Windows // View split on right ... Alt+Right
if you need 4+ workspaces,
#dconf read /org/gnome/desktop/wm/keybindings/switch-to-workspace-1 dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-5 "['<Alt>5']" dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-6 "['<Alt>6']"
enable alt-right-click to resize windows,
sudo apt install gnome-tweak-tool Start -> Tweaks Windows // Resize with Secondary-Click: (enable) Windows // Windows Action Key: Alt #(obsolete) #sudo apt install compizconfig-settings-manager #ccsm #window management > resize window button2->button3
To launch Budgie from multi-user target (init 3),
vi ~/.xinitrc #!/bin/bash export XDG_CURRENT_DESKTOP=Budgie:GNOME exec budgie-desktop
https://askubuntu.com/questions/64605/how-do-i-set-focus-follows-mouse
https://solus-project.com/articles/configuration/enabling-workspaces/en/
https://wiki.archlinux.org/index.php/Budgie_Desktop
Beware of the upcoming Budgie Desktop Environment, it is a serious competitor to MS Windows and Apple OSX interfaces in terms of usability. Ubuntu is going to release a new version of Unity (current is v7, going for v8) but IMHO Budgie is way beyond and could be the new war-facing Desktop Env from the Open Source community. It is going to be available in the next Ubuntu release with apt install budgie but in the meanwhile you can use,
add-apt-repository ppa:budgie-remix/ppa apt update apt install budgie-desktop budgie-welcome
Note: do NOT install budgie-remix-desktop nor budgie-desktop-environment as it will turn the whole Ubuntu system around.