This is an issue for me too . settings will not open under either wayland or xorg gnome-session . it does however open when logged in the ubuntu-session.
-- 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/1755536 Title: gnome-control-center is not open ubuntu 18.04 Status in gnome-control-center package in Ubuntu: Incomplete Bug description: gnome-control-center is not working when open. it will not open on ubuntu 18.04 even after reinstall ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-control-center 1:3.27.92-1ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3 Uname: Linux 4.15.0-10-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Mar 13 23:28:27 2018 EcryptfsInUse: Yes InstallationDate: Installed on 2017-03-04 (374 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1755536/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp