Here installing kde-workspace-bin did resurect the plasma-workspace option in the menu, which lead to a successful login. I have no idea why the kde-workspace-bin package was uninstalled.
-- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-workspace in Ubuntu. https://bugs.launchpad.net/bugs/976397 Title: in Kubuntu 12.04, plasma-desktop does not start in the KDE session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/976397/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs