This is mostly a duplicate of bug 1666676. Run this command in a terminal, then log out and log back in:
sudo apt install tracker -- 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/1702878 Title: Cant add folders to Search in Gnome Control Center Status in gnome-control-center package in Ubuntu: Confirmed Bug description: When I go to Gnome Control Center-Search the bottom right gear is greyed out and I cant add any folders to Search. lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Artful Aardvark (development branch) Release: 17.10 Codename: artful apt-cache policy gnome-control-center gnome-control-center: Installed: 1:3.24.2-0ubuntu4 Candidate: 1:3.24.2-0ubuntu4 Version table: *** 1:3.24.2-0ubuntu4 500 500 http://archive.ubuntu.com/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-control-center 1:3.24.2-0ubuntu4 ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17 Uname: Linux 4.10.0-26-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.5-0ubuntu5 Architecture: amd64 CurrentDesktop: GNOME Date: Fri Jul 7 12:36:34 2017 InstallationDate: Installed on 2017-06-17 (19 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170616) 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/1702878/+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
