Is there any way to fix this issue, Or any other method to fix the chattering issue on Ubuntu. I tried bounce key - not quite good.
Hereist the git hub repo: https://github.com/finkrer/KeyboardChatteringFix-Linux
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This script has two python modules as requirements, libevdev and inquirer. If you want to run the script with your systemwide python environment, you can try to find the relevant APT packages (often named python-MODULENAME) to install the modules on your system.
Alternatively you can create a python virtual environment (you can easily find howtos) and install the requirements in the virtual environment using the pip tool. This way, the requirements will be installed for this project only.
Also keep in mind to never use pip as sudo, it should not manage your systemwide python modules because it will conflict with your package manager.
Oh and good luck regarding your transition from windows to Ubuntu. I see that you had different issues for your first time, it can be though sometimes but keep going you will eventually get yourself confortable and understand new things on how it works. You will not regret it