The problem still persist in Ubuntu 17.10. Installing gnome-control-center and evolution didn't work for me.
When I try to add online calendar (Settings -> Add -> From Web) in "Add calendar" dialog, button "Add" stays disabled when I enter URL.
If I download the calendar and add it via "From file" method, everything works.
% sudo apt-get install gnome-control-center evolution
Reading package lists... Done
Building dependency tree
Reading state information... Done
gnome-control-center is already the newest version (1:3.26.1-0ubuntu4).
evolution is already the newest version (3.26.1-1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
The problem still persist in Ubuntu 17.10. Installing gnome-control- center and evolution didn't work for me.
When I try to add online calendar (Settings -> Add -> From Web) in "Add calendar" dialog, button "Add" stays disabled when I enter URL.
If I download the calendar and add it via "From file" method, everything works.
% sudo apt-get install gnome-control- center evolution center is already the newest version (1:3.26. 1-0ubuntu4) .
Reading package lists... Done
Building dependency tree
Reading state information... Done
gnome-control-
evolution is already the newest version (3.26.1-1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
% apt-cache policy gnome-calendar ie.archive. ubuntu. com/ubuntu artful/main amd64 Packages dpkg/status
gnome-calendar:
Installed: 3.26.2-1
Candidate: 3.26.2-1
Version table:
*** 3.26.2-1 500
500 http://
100 /var/lib/
% lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10