Comment 16 for bug 1228567

Using the script that Marmuta suggested at the top generates two files. Here is the content of the user one:

SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

** (at-spi2-registryd-:14335): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

** (at-spi2-registryd-:14335): WARNING **: Unable to register client with session manager
SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

** (at-spi2-registryd-:15092): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

** (at-spi2-registryd-:15092): WARNING **: Unable to register client with session manager

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Here is the lightdm one:

SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

** (at-spi2-registryd-:14804): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

** (at-spi2-registryd-:14804): WARNING **: Unable to register client with session manager
g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

** (at-spi2-registryd-:15577): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

** (at-spi2-registryd-:15577): WARNING **: Unable to register client with session manager