Questions about CalDav Syncproblems (three KDE machines + Android)

[Markus Feilner]

Fun fact: I installed Merkuro and found that it shows a third set of calendar 
data. E.g. the appointment agreed upon via mail and postponed on Tuesday for 
today does not appear at all. Seems like the akonadi backend did not deliver 
neither one of the two to merkuro-calendar at all. So I have three different 
sets of data: 

a) The Master on the caldav server that is correct and works fine with 
thunderbird and davX (Android)
b) the set in Kontact-korganizer via akonadi
c) the set in MerKuro via akonadi

I think I am getting there, slowly. What I also noticed: After a clean login 
(remove the calendar from korganizer, restart kontact, add it again) the data 
is correct, but as time goes by it is getting out of sync. 

In will fiddle around with what happens when I export and import calendar data 
via files. 

Thanks for letting me spam you here :-) 


Am Freitag, 27. März 2026, 08:56:03 Mitteleuropäische Normalzeit schrieb 
Markus Feilner:
> thanks for your answer, Vojtěch! Much appreciated.
> 
> Running a Radicale Caldav Server. That works like a charm with Thunderbird
> and DavX - Android. Only KDE Kontact gets out of sync.
> 
> e.g. In Kontact, I accepted an appointment change on Tuesday (it was
> scheduled for 10 am today, postponed to 15:00 today) that came in via mail.
> The change is only visible in the one KDE Kontact client that I accepted
> the change in (via mail invite).
> 
> So this is one client that probably is out of sync, the change never arrived
> on the server. This works fine with DavX and Thunderbird.
> 
> What I can reproduce is: Appointments in Thunderbird or DavX are
> instantaneously written to the server, but not every KDE client does recieve
> them, even though authentication and all server data are correct. Sometimes
> akonadictl restart helps, but not always and not on all machines. Weird
> 
> I would love to learn how to debug this in akonadiconsole e.g. – I'm digging
> deeper here...
> 
> 
> Am Freitag, 27. März 2026, 08:11:17 Mitteleuropäische Normalzeit schrieb
> 
> Vojtěch Zeisek:
> > Dne pátek 27. března 2026 7:47:20, středoevropský standardní čas, Markus
> > 
> > Feilner napsal(a):
> > > Hi there, is this the right place to start a thread about Caldav
> > > sync problems with kontact / korganizer? I would love to learn
> > > about debugging it.
> > > I have three desktops with kontact, opensuse tumbleweed and
> > > plasma6 plus a few android devices. And somehow they always
> > > seem to be out of sync with my radicale CALDAV server.
> > > I can provide more details if wanted.. but is there a korganizer
> > > mailing list or so?
> > 
> > What is on the server side? I use it with NextCloud an SOGo and I don't
> > have any issue... Did You double check that You download all resources
> > You wish to sync, You have some reasonable sync interval, etc.?


-- 

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Markus Feilner, Feilner IT
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