This bug was fixed in the package gnome-settings-daemon -
3.26.1-0ubuntu4
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gnome-settings-daemon (3.26.1-0ubuntu4) artful; urgency=medium
* debian/patches/ubuntu-lid-close-suspend.patch:
- restore the patch for the schemas part (and delete the code),
those keys are
** Changed in: unity-settings-daemon (Ubuntu)
Importance: Medium => High
** Changed in: unity-settings-daemon (Ubuntu)
Status: Confirmed => In Progress
** Information type changed from Private to Public
** Package changed: unity-settings-daemon (Ubuntu) => gnome-settings-
daemon