When trying to log onto a Kubuntu 14.04 LTS system. I noticed that all users would pass, when logging in via
ssh, but graphical login (i.e. LightDM with the KDE greeter) would just be possible for local accounts.
More precise: LDAP users would be authenticated with ease, but then KDE Plasma would not start up. The relevant lines of the log file:
# /var/log/lightdm/lightdm.log DEBUG: Seat: Failed to find session configuration default DEBUG: Seat: Can't find session 'default'
The lines do not show up when local accounts log in.
How to fix this? Explanations?