New answers tagged gnome-classic
Run sudo apt-get install lightdm. If it's already installed, run sudo dpkg-reconfigure lightdm, and choose lightdm. You can still log in to any desktop you've install by selecting the arrow in lightdm and clicking gnome classic.
Try with this Gnome3 shell, remove the gnome-fallback-compiz Remove this in terminal, DON'T purge anything and install: sudo apt-get install gnome-shell ubuntu-gnome-desktop
Install gnome tweak tool (gnome-tweak-tool), and there you have the option under "Windows" -> "Window focus mode"
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