You might have noticed some rumors earlier this week about Ubuntu 17.10 ditching its beloved LightDM login manager for GNOME’s GDM display manager, especially now that the daily build ISO images are shipping with the GNOME desktop environment by default instead of Unity, but it’s now official and confirmed by Canonical, who said that they don’t have time to make LightDM work with GNOME. As you are aware, Canonical decided to stop the development of its in-house built Unity user interface and replace it with the more popular GNOME desktop environment for the upcoming Ubuntu 17.10 (Artful Aardvark) operating system, due for release on October 19, 2017. The LightDM login manager was a strong part of the Unity desktop, but now it’s going away too, whether you like it or not.