Version: (using KDE 4.2.3) OS: Linux Installed from: Fedora RPMs (This issue was originally reported downstream at Fedora -- https://bugzilla.redhat.com/500605 -- and I was advised to report it here instead ...) If I go to the Users tab in the KDM config tool and press "defaults", the list of users in the "excluded" list changes. Before (from a freshly reinstalled kde-settings-kdm; my user account is "mef"): [ ] @adm [ ] @bin [ ] @daemon [ ] @disk [ ] @root [ ] @sys [ ] @wheel [ ] mef [X] root After: [ ] @adm [ ] @bin [ ] @daemon [ ] @disk [ ] @root [ ] @sys [ ] @wheel [ ] avahi [ ] avahi-autoipd [ ] jetty [ ] mef [ ] pulse [ ] root [ ] smolt
that's because the determination of the regular uids range is quite a hack. i don't know whether there is a clean way to do that distribution-agnostically these days, but even then there is the non-linux systems. i'm inclined to say that downstream has to bother with it, but i'll leave it open as a research item.
kdm reached it's end of life with Plasma 4, whose last bugfix release was last August 2015, we are sorry we did not get to fix this bug. We encourage you to try Plasma 5 and its recommended display manager SDDM and it's control module kcm_ssdm. And please do not hesitate to file bugs against it if you find any. Sorry again we could not fix your bug.