I tried this thread but it didn't work.
How can I disable
super + s which previews workspaces
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You can use CompizConfig to do this. (
sudo apt-get install compizconfig-settings-manager in a terminal to install if it isn't on your computer already)
To open, type "CompizConfig" into your Dash, or
ccsm in the terminal.
Once it's open, scroll to the "Expo" option, which can be found in the Desktop section (I assume this is in the default plugins but cannot remember for certain)
Click on Expo, and then on the Bindings tab, look at the top option (Expo key). Click on the right, where it says "<Super>s". Then either uncheck the "Enabled" box to disable it entirely, or click "Grab key combination" and enter a different combo to change it to something else. Click OK to accept your settings and you should be good to go.
Hope this helps!
sudo apt-get install compizconfig-settings-manager && ccsm) in
Desktop > expo > binding > expo key
Desktop > Ubuntu Unity Plugin > Launcher > Key to show the Dash, Launcher and Help Overlay. I set it to [control+super] to still be able to hit it with a single finger.
Hope this helps.