=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2021.04.30 09:51:24 =~=~=~=~=~=~=~=~=~=~=~=
cat seat0-greeter.log 
** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:10:36)

** (process:1979): WARNING **: [PIDs] Failed to execute command: /usr/lib/at-spi2-core/at-spi-bus-launcher
** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf
** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf

** (lightdm-gtk-greeter:1979): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files

** (lightdm-gtk-greeter:1979): WARNING **: [PIDs] Failed to execute command: upstart

** (lightdm-gtk-greeter:1979): WARNING **: Failed to run '/usr/share/language-tools/language-options': Failed to execute child process "/usr/share/language-tools/language-options" (No such file or directory)

** (lightdm-gtk-greeter:1979): WARNING **: [Background] Failed to load background: Failed to open file '/usr/share/backgrounds/warty-final-ubuntu.png': No such file or directory

** (lightdm-gtk-greeter:1979): WARNING **: [Background] Failed to read wallpaper: /usr/share/backgrounds/warty-final-ubuntu.png

** (lightdm-gtk-greeter:1979): 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
root@DE10-Standard:/var/log/lightdm#