Alejandro's instructions did not restore Unity for me. But to make the process easier for those that want to try, here they are in an easy to copy & paste format:
sudo apt install lightdm sudo dpkg-reconfigure lightdm sudo systemctl enable lightdm.service sudo reboot -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1569357 Title: Ubuntu 16.04 - Unity desktop session broken when using non-LightDM as X Display Manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxdm/+bug/1569357/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
