/etc/ligthdm/lightdm.log
1 [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
2 [+0.00s] DEBUG: Starting Light Display Manager 1.32.0, UID=0 PID=2245
3 [+0.01s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
4 [+0.01s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
5 [+0.01s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
6 [+0.01s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
7 [+0.02s] DEBUG: Registered seat module local
8 [+0.02s] DEBUG: Registered seat module xremote
9 [+0.02s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
10 [+0.03s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
11 [+0.03s] DEBUG: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
12 [+0.04s] DEBUG: Monitoring logind for seats
13 [+0.04s] DEBUG: New seat added from logind: seat0
14 [+0.04s] DEBUG: Seat seat0: Loading properties from config section Seat:*
15 [+0.04s] DEBUG: Seat seat0 has property CanMultiSession=no
16 [+0.05s] DEBUG: Seat seat0: Starting
17 [+0.05s] DEBUG: Seat seat0: Creating user session
18 [+0.05s] DEBUG: Loading users from org.freedesktop.Accounts
19 [+0.06s] DEBUG: User /org/freedesktop/Accounts/User1000 added
20 [+0.07s] DEBUG: Seat seat0: Failed to find session configuration default
21 [+0.07s] DEBUG: Seat seat0: Can't find session 'default'
22 [+0.07s] DEBUG: Seat seat0: Creating greeter session
23 [+0.08s] DEBUG: Seat seat0: Failed to find session configuration lightdm-gtk-greeter
24 [+0.08s] DEBUG: Seat seat0: Failed to create greeter session
25 [+0.08s] DEBUG: Failed to start seat: seat0
compare the correct working one in another OS partition
1 [+0.01s] DEBUG: Logging to /var/log/lightdm/lightdm.log
2 [+0.01s] DEBUG: Starting Light Display Manager 1.32.0, UID=0 PID=2206
3 [+0.01s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
4 [+0.01s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
5 [+0.01s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
6 [+0.01s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
7 [+0.01s] DEBUG: Registered seat module local
8 [+0.01s] DEBUG: Registered seat module xremote
9 [+0.01s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
10 [+0.01s] DEBUG: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
11 [+0.01s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
12 [+0.02s] DEBUG: Monitoring logind for seats
13 [+0.02s] DEBUG: New seat added from logind: seat0
14 [+0.02s] DEBUG: Seat seat0: Loading properties from config section Seat:*
15 [+0.02s] DEBUG: Seat seat0 has property CanMultiSession=no
16 [+0.02s] DEBUG: Seat seat0: Starting
17 [+0.02s] DEBUG: Seat seat0: Creating user session
18 [+0.02s] WARNING: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files
19 [+0.02s] DEBUG: Loading user config from /etc/lightdm/users.conf
20 [+0.02s] DEBUG: User budi added
21 [+0.03s] DEBUG: Seat seat0: Creating display server of type x
22 [+0.03s] DEBUG: Could not run plymouth --ping: Failed to execute child process “plymouth” (No such file or directory)
23 [+0.03s] DEBUG: Using VT 7
24 [+0.03s] DEBUG: Seat seat0: Starting local X display on VT 7
25 [+0.03s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
26 [+0.03s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
27 [+0.03s] DEBUG: XServer 0: Launching X Server
28 [+0.03s] DEBUG: Launching process 2217: /bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
29 [+0.03s] DEBUG: XServer 0: Waiting for ready signal from X server :0
30 [+0.03s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
31 [+0.03s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
32 [+3.91s] DEBUG: Got signal 10 from process 2217
33 [+3.91s] DEBUG: XServer 0: Got signal from X server :0
34 [+3.91s] DEBUG: XServer 0: Connecting to XServer :0
35 [+3.92s] DEBUG: Seat seat0: Display server ready, starting session authentication
36 [+3.92s] DEBUG: Session pid=2243: Started with service 'lightdm-autologin', username 'budi'
37 [+3.98s] DEBUG: Session pid=2243: Authentication complete with return value 0: Success
38 [+3.98s] DEBUG: Seat seat0: Session authenticated, running command
39 [+3.98s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0
40 [+3.98s] DEBUG: Session pid=2243: Running command /etc/lightdm/Xsession startxfce4
41 [+3.98s] DEBUG: Creating shared data directory /var/lib/lightdm-data/budi
42 [+3.98s] DEBUG: Session pid=2243: Logging to .xsession-errors
43 [+4.00s] DEBUG: Activating VT 7
44 [+4.00s] DEBUG: Activating login1 session 1
better clue maybe?