Changing Monitors

Yes, it’s irrelevant.

Also, when I ran up Konsole I got a weird effect where I could see the prompt and what I typed, but not the output (e.g. an ‘ls’ produced what looked like a lot of blank lines). When I clicked on the title bar all the ‘missing’ text became visible. Might be a problem associated with running Konsole on a Gnome desktop…

No. But maybe a compositing or desktop effects issue. I don’t remember.