This is related to bug 272540, that the update-manager does not notify the user about packages that have been removed from the archives. In this particular case, the update-manager should probably just remove displayconfig-gtk from the system during the upgrade.
This is related to bug 272540, that the update-manager does not notify the user about packages that have been removed from the archives. In this particular case, the update-manager should probably just remove displayconfig-gtk from the system during the upgrade.