Hi, I also have the same problem.
In my case I did not install the full KDE environment because I wanted to have minimal system without full-text search and all other memory-consuming niceties. kwin-x11 is installed and has no unsatisfied dependencies. I also have kde-window-manager installed, but removing it does not seem to be easy because then it complains that kde-workspace depends on it, as well as a few other packages. kwin_wayland is not installed. I would prefer not to install kde-full I've tried updating the alternatives, and here what I've got: update-alternatives: warning: alternative /usr/bin/kwin (part of link group x-window-manager) doesn't exist; removing from list of alternatives update-alternatives: warning: /etc/alternatives/x-window-manager has been changed (manually or by a script); switching to manual updates only There is no program which provides x-window-manager. Nothing to configure. So it looks like there is no any X windows manager installed, from the point of view of the system. I've tried installing "sudo aptitude -PRV install kde-standard" but it did not help. Installing kde-full with all recommended packages would add some 1.5 GB of garbage I don't need on a development machine, and that's would be really unpleasant after those happy years with fine-tuned KDE and Debian Testing installation... Any advice? Sincerely, Andrew -- Andrew Schetinin