In those releases the marble wallpaper/clock was not buildable (not ported). Trusty and Xenial are also end of life for Kubuntu support.
** Changed in: marble (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Edubuntu Bugsquad, which is subscribed to marble in Ubuntu. https://bugs.launchpad.net/bugs/574450 Title: No marble globe wallpaper in desktop settings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/marble/+bug/574450/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~edubuntu-bugs Post to : edubuntu-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~edubuntu-bugs More help : https://help.launchpad.net/ListHelp