Ubuntu/Ubuntu Desktop

sudo apt-get install --reinstall ubuntu-desktop
sudo apt -y install xfonts-base xfonts-100dpi xfonts-75dpi

Note: To experience the default GNOME installation on Ubuntu, install the following packages:

sudo apt install vanilla-gnome-desktop vanilla-gnome-default-settings.

To install ubuntu-desktop without all of the recommends:

sudo apt-get install --no-install-recommends ubuntu-desktop