The minimal informations needed would include the Ubuntu version and desktop environment you are using. It would also be useful to know how you configured your calendars and if the account config shows any error.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-calendar in Ubuntu. https://bugs.launchpad.net/bugs/1633053 Title: gnome-calendar 3.20.4 inoperable after update on 13 October 2016 Status in gnome-calendar package in Ubuntu: Incomplete Bug description: Calendar 3.20.4 has no data showing. It is a blank calendar. All my data seems to be erased. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-calendar/+bug/1633053/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp