Why is the meta key is not working when using Emacs?

Suddenly, I am not able to use any combination of meta keys. The Alt key is not working at all in my emacs. Can anyone help me on this issue?


Solution 1:

I fixed this in my Ubuntu Terminal app by going in the menu: Edit -> Keyboard Shortcuts and deselecting the 'Enable menu access keys (such as Alt+F to open the File menu)'.