Found the issue. I had installed a shell extension for touchpad disabling in 16.04 when I couldn't find a setting. Without that extension I get a bunch of touchpad options indeed. Sorry for the false alarm, and thanks for looking into it.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1772192 Title: Missing setting to disable touchpad Status in gnome-control-center package in Ubuntu: Invalid Bug description: There is no longer an option to disable the touchpad. On Thinkpads with a Trackpoint and a Touchpad that's a common thing to do. 16.04 included this option and in 18.04 it is now missing. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-control-center 1:3.28.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat May 19 18:48:28 2018 InstallationDate: Installed on 2016-10-27 (568 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to bionic on 2018-05-19 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1772192/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp