I'm running Ubuntu 14.04 'Trusty Tahr' So after losing the sidebar and the menu bar I went to tty, reinstalled unity by using:
sudo apt-get install ubuntu-desktop
sudo apt-get install --reinstall unity
rebooted the system:
Still the side-bar is missing. But one interesting thing is that when I log-in as a guest, the desktop has the sidebar and it works perfectly, just not in my superuser account. Why is that?
Used the following commands as suggested by an answer:
dconf reset -f /org/compiz/
But the process got stuck at:
Compiz (Core)- Info: Starting plugin: scale
I waited for an hour but nothing happened. And I still have a missing sidebar and running my programs through tty's. Help please!