I was curious, so I installed kde alongside gnome (which I use primarily, for the matter).
I am running arch linux, and I installed kde using yaourt, by the following command:
yaourt -Syua # update databases
yaourt -S kde --force # install kde itself
I installed everything yaourt suggested for kde, and I didn't get any errors.
So, I rebooted the computer, selected kde plasma in the gdm environment select menu. I entered the password and gdm accepted it.
However, when gdm starts kde, I see a wallpaper with a white transparent rectangle with a picture of a hard disk on the left. The mouse is visible and I can move it, but that's it. Nothing happens after that.
Is this normal or do I have to re-install kde ?