● lightdm.service - Light Display Manager
   Loaded: loaded (/lib/systemd/system/lightdm.service; indirect; vendor preset: enabled)
   Active: failed (Result: exit-code) since Thu 2019-05-30 12:06:44 -04; 1min 16s ago
     Docs: man:lightdm(1)
  Process: 7157 ExecStartPre=/bin/sh -c [ "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/lightdm" ] (code=exited, status=0/SUCCESS)
  Process: 7159 ExecStart=/usr/sbin/lightdm (code=exited, status=1/FAILURE)
 Main PID: 7159 (code=exited, status=1/FAILURE)

May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: lightdm.service: Service RestartSec=100ms expired, scheduling restart.
May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.
May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: Stopped Light Display Manager.
May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: lightdm.service: Start request repeated too quickly.
May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: lightdm.service: Failed with result 'exit-code'.
May 30 12:06:44 serv-debian.csdbtl.int systemd[1]: Failed to start Light Display Manager.