Dear Maintainer,
After updating from lightdm-gtk-greeter 2.0.8-1 to 2.0.8-2 lightdm fails to
start at boot.
journalctl -b -1 -u lightdm.service
-- Logs begin at Sun 2020-09-27 21:25:17 MDT, end at Mon 2020-11-16 13:52:50
MST. --
Nov 16 10:26:13 X1 systemd[1]: Starting Light Display Manager...
Nov 16 10:26:13 X1 systemd[1]: Started Light Display Manager.
Nov 16 10:26:13 X1 lightdm[461]: 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
Nov 16 10:26:13 X1 systemd[1]: lightdm.service: Main process exited,
code=exited, status=1/FAILURE
Nov 16 10:26:13 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:13 X1 systemd[1]: lightdm.service: Scheduled restart job, restart
counter is at 1.
Nov 16 10:26:13 X1 systemd[1]: Stopped Light Display Manager.
Nov 16 10:26:13 X1 systemd[1]: Starting Light Display Manager...
Nov 16 10:26:13 X1 systemd[1]: Started Light Display Manager.
Nov 16 10:26:14 X1 lightdm[534]: 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
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Main process exited,
code=exited, status=1/FAILURE
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Scheduled restart job, restart
counter is at 2.
Nov 16 10:26:14 X1 systemd[1]: Stopped Light Display Manager.
Nov 16 10:26:14 X1 systemd[1]: Starting Light Display Manager...
Nov 16 10:26:14 X1 systemd[1]: Started Light Display Manager.
Nov 16 10:26:14 X1 lightdm[556]: 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
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Main process exited,
code=exited, status=1/FAILURE
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Scheduled restart job, restart
counter is at 3.
Nov 16 10:26:14 X1 systemd[1]: Stopped Light Display Manager.
Nov 16 10:26:14 X1 systemd[1]: Starting Light Display Manager...
Nov 16 10:26:14 X1 systemd[1]: Started Light Display Manager.
Nov 16 10:26:14 X1 lightdm[563]: 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
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Main process exited,
code=exited, status=1/FAILURE
Nov 16 10:26:14 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Scheduled restart job, restart
counter is at 4.
Nov 16 10:26:15 X1 systemd[1]: Stopped Light Display Manager.
Nov 16 10:26:15 X1 systemd[1]: Starting Light Display Manager...
Nov 16 10:26:15 X1 systemd[1]: Started Light Display Manager.
Nov 16 10:26:15 X1 lightdm[571]: 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
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Main process exited,
code=exited, status=1/FAILURE
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Scheduled restart job, restart
counter is at 5.
Nov 16 10:26:15 X1 systemd[1]: Stopped Light Display Manager.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Start request repeated too
quickly.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Nov 16 10:26:15 X1 systemd[1]: Failed to start Light Display Manager.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Triggering OnFailure=
dependencies.
Nov 16 10:26:15 X1 systemd[1]: lightdm.service: Failed to enqueue OnFailure=
job, ignoring: Unit plymouth-quit.service not found.
cat /var/log/lightdm/lightdm.log.old
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=548
[+0.00s] DEBUG: Loading configuration dirs from
/usr/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/01_debian.conf
[+0.00s] DEBUG: Loading configuration dirs from
/usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: _g_io_module_get_default: Found default implementation local
(GLocalVfs) for ‘gio-vfs’
[+0.00s] DEBUG: Monitoring logind for seats
[+0.00s] DEBUG: New seat added from logind: seat0
[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.00s] DEBUG: Seat seat0 has property CanMultiSession=no
[+0.00s] DEBUG: Seat seat0: Starting
[+0.00s] DEBUG: Seat seat0: Creating greeter session
[+0.00s] DEBUG: Seat seat0: Creating display server of type x
[+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
[+0.00s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.00s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.00s] DEBUG: XServer 0: Writing X server authority to
/var/run/lightdm/root/:0
[+0.00s] DEBUG: XServer 0: Launching X Server
[+0.00s] DEBUG: Launching process 553: /usr/bin/X :0 -seat seat0 -auth
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.00s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.00s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Registering seat with bus path
/org/freedesktop/DisplayManager/Seat0
[+0.01s] 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
[+0.01s] DEBUG: Loading user config from /etc/lightdm/users.conf
[+0.01s] DEBUG: User calchan added
[+0.01s] DEBUG: Process 553 exited with return value 1
[+0.01s] DEBUG: XServer 0: X server stopped
[+0.01s] DEBUG: Releasing VT 7
[+0.01s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0
[+0.01s] DEBUG: Seat seat0: Display server stopped
[+0.01s] DEBUG: Seat seat0: Stopping session
[+0.01s] DEBUG: Seat seat0: Session stopped
[+0.01s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+0.01s] DEBUG: Seat seat0: Stopping; greeter display server failed to start
[+0.01s] DEBUG: Seat seat0: Stopping
[+0.01s] DEBUG: Seat seat0: Stopped
[+0.01s] DEBUG: Required seat has stopped
[+0.01s] DEBUG: Stopping display manager
[+0.01s] DEBUG: Display manager stopped
[+0.01s] DEBUG: Stopping daemon
[+0.01s] DEBUG: Exiting with return value 1
When subsequently starting it as root with `systemctl restart lightdm.service`
it starts correctly.
Since the only relevant package which had been updated was lightdm-gtk-greeter
I tried downgrading it to its previous version, 2.0.8-1, and that worked around
the issue.