Kubuntu comes with a graphical package management tool named 'Discover'. This can be used to install and uninstall software. The manual for Discover...
Yup. Tried that already, too. Forgot to mention it in my original post, maybe? Whhen I go that route, it just sits there with a Windows/Surface logo...
A couple of thoughts come to mind: (1) Try reducing the resolution of your screen. (2) Is your power supply adequate for the load? Sometimes they go...