Of course, you can permanently disable the key to make sure that nothing happens when it is pressed, but that’s not the best solution given all you want is to prevent the key from doing anything when an application is running in full screen mode. Thankfully, there’s now a way – although not official – to disable the Super key only for full-screen apps. Please note that the solution we’ll be discussing here has been tested on Ubuntu 16.04 LTS.
Disable Super Key
The tool that does the trick in this case is nothing but a small python script written by an AskUbuntu user Serg. To download and set up the script, execute the following commands: Once downloaded, the script can be executed in the following way (assuming that you are in the /opt directory): The aforementioned command will not produce any output on the terminal.
But it will do what it promises – prevent Super key from opening Unity Dash for full-screen applications. The script also has a debugging option which can be enabled by changing line number 34 from debug = False to debug = True and running it from the command line again. The following screen shot shows the output the script produces when run with the debugging option enabled.
In the screenshot above, the lines beginning with the word “Disabled” were printed when I tried pressing the Super key while a full-screen application was running. Keep in mind that the “disable_super_key” script only disables the Super key; it doesn’t prevent Super key combinations like “Super + L” from initiating any corresponding action. But that, I personally believe, should not be a major problem, as the accidental pressing of a key combination should be rare. It’s worth mentioning that Serg also came up with a solution to make sure that the disabling of the Super key can be made workspace-specific. The solution, he says, is generic and basically consists of a wrapper script that executes the user’s command upon entering a workspace, and sends SIGTERM to it when the user enters a workspace not on the list. Sadly, however, the solution – as per my testing – doesn’t work on Ubuntu 16.04.
Conclusion
The “disable_super_key” script created by the author undoubtedly is a very good solution to the problem it caters. It’s really easy to download, install, and execute. Needless to say, you can always make the script start automatically when logging in to make things more convenient.
