➜  ~ sudo apt-get install --reinstall gsettings-desktop-schemas
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/25.9 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 126965 files and directories currently installed.)
Preparing to unpack .../gsettings-desktop-schemas_3.18.1-1ubuntu1_all.deb ...
Unpacking gsettings-desktop-schemas (3.18.1-1ubuntu1) over (3.18.1-1ubuntu1) ...
Processing triggers for gconf2 (3.2.6-3ubuntu6) ...
Processing triggers for libglib2.0-0:amd64 (2.48.0-1ubuntu4) ...
Setting up gsettings-desktop-schemas (3.18.1-1ubuntu1) ...