First of all thanks for your fast reply. Second. The server im trying to use is https://dav.mailbox.org/caldav I dont think its a problem with my configuration (although i can always be wrong). I suspect a bug in evolution because sometimes it works. Sometimes i manage to create an event sometimes i cant. I started evolution from a terminal and i noticed that when i fail to create an event i get the following message "(evolution:26852): libecal-CRITICAL **: 11:45:50.282: e_cal_component_alarm_set_description: assertion 'description->value != NULL' failed" I tried without setting an alarm and i can create events with no problem!! So I filled a bug report https://bugs.centos.org/view.php?id=16507 Third. I have no idea if its a configuration problem. Newer flatpak versions work fine! I searched online and found this https://github.com/flatpak/flatpak/issues/3076 marked as enhancement! ps.Im wondering if evolution in Centos is going to have 5+ year life- cycle or if it gets upgraded earlier. On Tue, 2019-10-01 at 08:25 -0400, Stephen John Smoogen wrote: > On Tue, 1 Oct 2019 at 03:40, Georgios <gpdsbe+centos at mailbox.org> > wrote: > > Hi there! > > I recently installed centos 8 on my laptop. > > > > I have the following problems > > > > 1. I tried the use the default evolution 3.28. > > The problem with 3.28 is that when i try to create an event i get > > the error > > "Failed to create an event in the calendar “CalDAV : Calendar”" > > "Cannot create calendar object: Failed to put data: HTTP error code > > 400 > > (Bad Request)" > > > > That sounds like a configuration issue that your calendar server is > not liking the authentication that evolution sent. We would need to > know > 1. what the calendar server you are trying to use > 2. what the configuration and how you authenticate > 3. what the error on the server side is. > > > 2.I tried installing evolution from flatpak 3.34 > > Calendar works fine! BUT cant use my yubikey to read my encrypted > > emails :-( > > For some reason flatpak seems unable to work with smartcards. > > Had the same issue with keepassxc and yubikey > > > > Flatpacks are sandboxes to make sure that the rest of your account is > secure from each other https://xkcd.com/1200/ . You have to configure > what applications you want to be able to talk to your smart card or > yubikey because just allowing anything to talk to them just leads to > the xkcd. > > That said, I do not know how to do this. My systems are pre-flatpak > so > I have not dealt with this. > > > > 3.My third attempt was to use thunderbird from flatpak. > > I installed thunderbird through flatpak to see if i could overcome > > the > > flatpak yubikey problem. > > Thunderbird starts but then crushes with the following message > > "flatpak run org.mozilla.Thunderbird > > Gtk-Message: 09:15:00.372: Failed to load module "pk-gtk-module" > > Gtk-Message: 09:15:00.372: Failed to load module "canberra-gtk- > > module" > > Gtk-Message: 09:15:00.372: Failed to load module "pk-gtk-module" > > Gtk-Message: 09:15:00.372: Failed to load module "canberra-gtk- > > module" > > " > > > > Ouch. That should be reported to the flatpak place you got that from. > Those aren't created by centos.org so I am guessing gnome or > flatpak.org ? > > > > I would prefer to use evolution than thunderbird. > > > > Any ideas how to solve the calendar or flatpak and yubikey problem? > > > > Thanks in advance!!! > > > > > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > https://lists.centos.org/mailman/listinfo/centos > >