If your gear icon vanishes then that indicates some bug has happened and the system is unable to offer you more than one option. Usually the system will just remember the last option you chose in the gear icon, so future logins should all be Wayland.
Out of curiosity, can you please run 'lspci -k' and send the output? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1796528 Title: Problem with dual monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1796528/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp