Initially I thought that I have a bad configuration, but I installed
the package from scratch, the configuration provided by the package
also lightdm does not start.
part of the log
[+4.16s] DEBUG: Starting greeter session
[+4.18s] WARNING: Could not call FindUserByName:
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.Accounts was not provided by any .service files
[+4.43s] DEBUG: pam_start("lightdm-autologin", "lightdm") -> (0xf88f4298, 0)
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.0.0, UID=0 PID=1365
[+0.00s] DEBUG: Loaded configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Registered seat module xlocal
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Adding default seat
[+0.00s] DEBUG: Starting seat
[+0.00s] DEBUG: Starting new display for greeter
[+0.00s] DEBUG: Starting local X display
[+0.00s] DEBUG: Could not run plymouth --ping: Failed to execute child process
"plymouth" (No such file or directory)
[+0.00s] DEBUG: Using VT 7
[+0.01s] DEBUG: Activating VT 7
[+0.01s] DEBUG: Logging to /var/log/lightdm/x-0.log
[+0.01s] DEBUG: Writing X server authority to /var/run/lightdm/root/:0
[+0.04s] DEBUG: Launching X Server
[+0.04s] DEBUG: Launching process 1378: /usr/bin/X :0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.04s] DEBUG: Waiting for ready signal from X server :0
[+0.04s] DEBUG: Acquired bus name
[+0.04s] DEBUG: Registering seat with bus path
/org/freedesktop/DisplayManager/Seat0
[+4.14s] DEBUG: Got signal 10 from process 1378
[+4.14s] DEBUG: Got signal from X server :0
[+4.14s] DEBUG: Connecting to XServer :0
[+4.16s] DEBUG: Starting greeter session
[+4.18s] WARNING: Could not call FindUserByName:
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.freedesktop.Accounts was not provided by any .service files
[+4.43s] DEBUG: pam_start("lightdm-autologin", "lightdm") -> (0xf88f4298, 0)
[+4.43s] DEBUG: Starting session lightdm-gtk-greeter as user lightdm logging to
/var/log/lightdm/x-0-greeter.log
[+4.46s] DEBUG: Greeter user got prompt, aborting authentication
[+4.46s] DEBUG: pam_authenticate(0xf88f4298, 0) -> 7 (Authentication failure)
[+4.46s] DEBUG: Greeter user failed authentication
[+61.63s] DEBUG: Got signal 15 from process 2141
[+61.63s] DEBUG: Caught Terminated signal, shutting down
[+61.63s] DEBUG: Stopping display manager
[+61.63s] DEBUG: Stopping seat
[+61.63s] DEBUG: Stopping display
[+61.63s] DEBUG: Sending signal 15 to process 1378
