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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?

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1 Answer 1

up vote 0 down vote accepted

Here is my quick fix:

sudo ln -s /usr/share/xsessions/kde-plasma.desktop /usr/share/xsessions/default.desktop

LightDM didn't find default.desktop, so we created a link with that name to our desired KDE Plasma.

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