How to install KDE plasma desktop on Ubuntu 20.04 Focal Fossa Linux - LinuxConfig.org

The objective is to install KDE plasma desktop as an alternative desktop environment on Ubuntu 20.04 Focal Fossa Desktop/Server Linux.


This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-install-kde-plasma-desktop-on-ubuntu-20-04-focal-fossa-linux

How do I remove the old, unneeded GNOME-files after the the installation? I could not find a tutorial on that, could you provide one?

I wanted to try KDE plasma desktop but I’m not convinced. Main problem is because it’s not working correctly on my 2nd screen. Probably because the two screens aren’t identical and the plasma desktop isn’t able fix this. On one screen it’s working good but it’s a lot slower.

So I want to go back to the normal 20.04 Focal Fossa desktop. Is it possible to uninstall it?