How can I disable the Windows key (or Super) from showing the GNOME Shell Activities overlay?
Disable Windows Key – How to Disable Windows Key from Opening Activities Overview
activities-overviewgnome-shellshortcut-keys
Related Solutions
It's actually pretty easy. Pressing alt + f1 should also probably show you the Activities overview, but if you want it to be Super + Tab, then simply open the settings application, and then select the "devices" tab, and under that select "keyboard". You should see a list of your keyboard shortcuts.
Note: The screenshot below is from Ubuntu 18.04 LTS, but it should be the same in Ubuntu 17.10 as well, as long you're using the GNOME Desktop.
Now, you can either search for "activities", or you'll find it under the heading "System":
You should be able to change it right here. Note that the shortcut for "Switch Applications" under "Navigation" would probably already be Super + Tab. So, if this is the case, and you change the shortcut for "Show the Activities overview" to Super + Tab without changing the shortcut for "Switch Applications", then that will get disabled - so if you want that as well, then choose a different shortcut for that!
Also remember that there is an extension available at https://extensions.gnome.org/ for almost anything you could want to do - so, if you can't find any particular setting in the settings or gnome tweak tool applications, you can just look at this site.
A command that causes the shell to switch to the overview is:
dbus-send --session --type=method_call --dest=org.gnome.Shell /org/gnome/Shell org.gnome.Shell.Eval string:'Main.overview.show();'
Use Main.overview.hide(); to close the overview, or Main.overview.toggle(); to toggle between overview and normal view (with thanks to gatr and Marcelo Avila).
Best Answer
You could try this: Open your gnome-shell, type keyboard layout and open it up. There should be three tabs in this window. Click the one on the right that says "Layouts." Click the "Options" button in the bottom-right corner of the window. You should see a list with the entries preceded by arrows. The third one down says "Alt/Win key behavior." Click this and it will drop down a list of options. The second-to-last option is "Meta is mapped to left Win key." Choose this one, close out the layouts menu, and it should be disabled.