Don't see any randomness to this at all. The current behavior seen here on a Fresh install of Mondays image updated - 1st. login after install is always to an ubuntu-xorg session The login greeter will Always says "ubuntu" no matter what.
Subsequent logins from a reboot or cold boot are always to the session one exited from previously. Logging out then in to the other session can produce some mixed info though the session will be what's picked. Possibly the mixed info is unimportant? Note that if on an ubuntu-xorg session because the greeter Always says ubuntu to actually get an ubuntu session one must switch in greeter from ubuntu to ubuntu-xorg & back to ubuntu Examples of mixed info from log out session switching: Log out from ubuntu-xorg to an actual ubuntu session. ~$ echo $DESKTOP_SESSION ubuntu $ env |grep wayland WAYLAND_DISPLAY=wayland-0 XDG_SESSION_TYPE=wayland $ env |grep xorg XDG_DATA_DIRS=/usr/share/ubuntu-xorg:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu-xorg:/etc/xdg Log out from an actual ubuntu session to an ubuntu-xorg session. $ echo $DESKTOP_SESSION ubuntu-xorg $ env |grep wayland WAYLAND_DISPLAY=wayland-0 $ env |grep xorg DESKTOP_SESSION=ubuntu-xorg XDG_DATA_DIRS=/usr/share/ubuntu-xorg:/usr/share/ubuntu-xorg:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop:/var/lib/snapd/desktop XDG_SESSION_DESKTOP=ubuntu-xorg GDMSESSION=ubuntu-xorg XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu-xorg:/etc/xdg/xdg-ubuntu-xorg:/etc/xdg Restarts produce different info Restart from an actual ubuntu session $ echo $DESKTOP_SESSION ubuntu $ env |grep wayland WAYLAND_DISPLAY=wayland-0 XDG_SESSION_TYPE=wayland $ env |grep xorg Restart from an ubuntu-xorg session. $ echo $DESKTOP_SESSION ubuntu-xorg $ env |grep xorg DESKTOP_SESSION=ubuntu-xorg XDG_DATA_DIRS=/usr/share/ubuntu-xorg:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop XDG_SESSION_DESKTOP=ubuntu-xorg GDMSESSION=ubuntu-xorg XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu-xorg:/etc/xdg $ env |grep wayland -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1705157 Title: "Ubuntu" and "Ubuntu on Xorg" randomly start the same session (maybe Wayland maybe Xorg) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-session/+bug/1705157/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs