elementary os faulty login process

rename the "/etc/xdg/autostart/at-spi-dbus-bus.desktop" in "/etc/xdg/autostart/at-spi-dbus-bus.desktop.backup" and reboot

https://www.reddit.com/r/elementaryos/comments/7t5j79/logging_in_takes_24_mintutes/

Unable to register client: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such method 'RegisterClient'

lightdm 이슈?

https://github.com/CanonicalLtd/lightdm/issues/11