(frontend:23525): GLib-GIO-ERROR **: Settings schema 'org.gnome.desktop.interface' does not contain a key named 'ubuntu-overlay-scrollbars'

[martin suchanek]

within Ubuntu distribution upgrading from 12.04 to 12.10 quantal - errors appeared repeatedly:

Processing triggers for hicolor-icon-theme ...
(frontend:23525): GLib-GIO-ERROR **: Settings schema 'org.gnome.desktop.interface' does not contain a key named 'ubuntu-overlay-scrollbars'
debconf: Unable to initialise frontend: Gnome
debconf: (DISPLAY problem?)
debconf: falling back to frontend: Dialog
debconf: Unable to initialise frontend: Dialog
debconf: (Dialogue frontend requires a screen at least 13 lines tall and 31 columns wide.)
debconf: falling back to frontend: Readline

lsb_release -rd
Description: Ubuntu 12.10
Release: 12.10

apt-cache policy hicolor-icon-theme
hicolor-icon-theme:
  Installed: 0.12-1ubuntu2
  Candidate: 0.12-1ubuntu2
  Version table:
 *** 0.12-1ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[linux-man (caldas-lopes)]

It seems that org.gnome.desktop.interface is created by the overlay-scrollbar package, so this and others GLib-GIO errors will appear to those of us that remover overlay-scrollbar package to disable overlay scrollbars.