Super key not toggling activities

I installed Ubuntu Gnome 16.04 on my new laptop but the Super key is not toggling activities. I tried to change the keybindings from settings> keyboard> System > Show the overview where it is set to Super + S, but it didn't work at all. I am used to using the Super key to toggle activities for 2 years and can't accept using any other key combination.

Can anyone help me?

Solution 1:

I found the solution here https://github.com/ckb-next/ckb-next/issues/165

What it says is that there's a 'lock-key' with a locked windows logo at the top of your keyboard (for my case, it's F9) which disables the super key. You need to switch it on.

Solution 2:

This might be what you are looking for, I had this problem too. I solved it using the answer on this thread. https://ubuntuforums.org/archive/index.php/t-963759.html