Mint Menu Disapeared
...if you are using Mate, open a terminal and:
gsettings reset-recursively org.mate.panel
For Cinnamon instead...
gsettings reset-recursively org.cinnamon
...if you are using Mate, open a terminal and:
gsettings reset-recursively org.mate.panel
For Cinnamon instead...
gsettings reset-recursively org.cinnamon