[LightDM] user-session not working

[François Dagorn]

Hello all,

Just wondering why our default user-session is not working. Two window managers
installed (gnome-classic and mate), mate is our best prefered, but when a brand new
user is trying his first login, gnome-classic is started.

/etc/lightdm/
#
# Seat defaults
#
# type = Seat type (xlocal, xremote)

user-session = mate

and in the log file :

+106.80s] DEBUG: Session pid=964: Authenticate result for user xxxx: Success
[+106.80s] DEBUG: Session pid=964: User xxxx authorized
[+106.83s] DEBUG: Session pid=964: Greeter requests session gnome-classic
[+106.86s] DEBUG: Seat: Stopping greeter; display server will be re-used for user session
[+106.86s] DEBUG: Session pid=964: Sending SIGTERM
[+106.87s] DEBUG: Session pid=964: Greeter closed communication channel
[+106.87s] DEBUG: Session pid=964: Exited with return value 0
[+106.87s] DEBUG: Seat: Session stopped
[+106.87s] DEBUG: Seat: Greeter stopped, running session
[+106.87s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0
[+106.87s] DEBUG: Session pid=1180: Setting XDG_VTNR=1
[+106.87s] DEBUG: Session pid=1180: Running command /etc/X11/xinit/Xsession gnome-session --session gnome-classic
[+106.87s] DEBUG: Session pid=1180: Logging to .xsession-errors
[+107.10s] DEBUG: Activating VT 1


Any help would be appreciated.

-- 
François