Sample run after shutting down evolution. I created on new calendar event, viewed another, and then clicked on the Mail button. Within 5 seconds the popups appear. Never connected to imap server.
# evolution -c calendar --offline
(evolution:3265): Gtk-WARNING **: No object called: combobox-category
(evolution:3265): libebook-WARNING **: e-book.c:3095: cannot get book from factory: Invalid source
(evolution:3265): e-data-server-ui-WARNING **: ENameSelector: Could not load "Ubuntu One": Invalid source
(evolution:3265): GLib-GObject-CRITICAL **: Object class EMFolderTree doesn't implement property 'paste-target-list' from interface 'ESelectable'
(evolution:3265): GLib-GObject-CRITICAL **: Object class EMFolderTree doesn't implement property 'copy-target-list' from interface 'ESelectable'
(evolution:3265): calendar-gui-WARNING **: e-task-table.c:1589: Could not get the objects
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/1
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/2
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/3
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/4
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/5
(evolution:3265): libecal-WARNING **: gdbus_cal_disconnect: Failed to close calendar, GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.evolution.dataserver.calendar.Cal' on object at path /org/gnome/evolution/dataserver/calendar/3241/6
(evolution:3265): libecal-DEBUG: GDBus connection is closed, remote peer vanished
Sample run after shutting down evolution. I created on new calendar event, viewed another, and then clicked on the Mail button. Within 5 seconds the popups appear. Never connected to imap server.
# evolution -c calendar --offline
(evolution:3265): Gtk-WARNING **: No object called: combobox-category
(evolution:3265): libebook-WARNING **: e-book.c:3095: cannot get book from factory: Invalid source
(evolution:3265): e-data- server- ui-WARNING **: ENameSelector: Could not load "Ubuntu One": Invalid source
(evolution:3265): GLib-GObject- CRITICAL **: Object class EMFolderTree doesn't implement property 'paste-target-list' from interface 'ESelectable'
(evolution:3265): GLib-GObject- CRITICAL **: Object class EMFolderTree doesn't implement property 'copy-target-list' from interface 'ESelectable'
(evolution:3265): calendar- gui-WARNING **: e-task- table.c: 1589: Could not get the objects
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/1
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/2
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/3
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/4
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/5
(evolution:3265): libecal-DEBUG: e-cal.c:452: ECal GDBus connection is closed, remote peer vanished
(evolution:3265): libecal-WARNING **: gdbus_cal_ disconnect: Failed to close calendar, GDBus.Error: org.freedesktop .DBus.Error. UnknownMethod: No such interface `org.gnome. evolution. dataserver. calendar. Cal' on object at path /org/gnome/ evolution/ dataserver/ calendar/ 3241/6
(evolution:3265): libecal-DEBUG: GDBus connection is closed, remote peer vanished