Looping Logins at KDM for KDE4

If, for some reason, the kdm is not letting you proceed with the login, and is instead sending you back to the login screen, check your ~/.xsession-errors file. If you see the following:

startkde: Starting up...
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
kded(7607): Communication problem with  "kded" , it probably crashed.
Error message was:  "org.freedesktop.DBus.Error.ServiceUnknown" : " "The name org.kde.kded was not provided by any .service files" "

startkde: Shutting down...

then it may be nice to know that the following method fixed the problem for me:

1. Create a new user.


2. Copy over the ~/.Xauthority and ~/.ICEauthority files from this new user to your dysfunctional user's home folder.


3. Remove the /var/tmp/kdecache- folder.