Revert from Gnome 3 to Unity
Open Terminal or CTRL+ALT+T
To install Unity
sudo apt-get install ubuntu-desktop unity
To Remove Gnome
sudo apt-get remove gnome-shell ubuntu-gnome-desktop
and reboot the system sudo reboot
If followed above 3 commands, you should be greeted with Unity session after reboot. In case it still doesn't comes up, open terminal and execute unity --replace
PS: by chance anything from gnome is left, follow https://askubuntu.com/a/244658/86467
On Ubuntu 17.10, this answer worked relatively well for me after rebooting (@Mayura's answer did not work for me).
sudo apt install unity
- Reboot
- At login screen, click the cog wheel next to the sign in button and select Unity.