To make GNOME Classic selectable on the login screen, the gnome-shell-
extensions package needs to be installed which it is not by default.
(No, Akbarkhon, vanilla-gnome-desktop is not necessary. Indeed it pulls
gnome-shell-extensions, but it pulls a myriad of other packages too.)
The gnome-class
Thank you for noticing and bringing it up.
Obviously, to be able to switch to GNOME Classic, you must have the
vanilla-gnome-desktop package installed. Perhaps this really needs to be
mentioned in the documentation. I think this is a relic of the times
when Ubuntu GNOME used to be one of the offic
