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CalDAV randomly(?) deletes calendar entries

asked 2014-11-24 13:08:30 +0300

Blizzz gravatar image

updated 2015-01-12 12:55:12 +0300

I have a private ownCloud instance that is primarily used by my wife and me. We use the calendar extensively. Ages ago, i set up the CalDAV account to have them available on my Jolla (cannot say it works acceptable, othher issues are opened). But now my Jolla started to deleted entries!

It first started on Nov 14th, 2.45am. 64 entries were deleted on our calendars. It looked as if all deleted entries were between June and November (including, also entries in November that were in the future.)

The second time it happened a week later, Nov 21st 0.06 am. 6 entries were deleted from my wfie's calendar. Probably those one's she manually (re)created since the first happening.

Fortunately i have backups… account is disabled now. SailfishOS version is

All actions were not triggered manually, and it is clear by the web server log that it definitely was my Jolla. Talking of this: please, use a more meaningful user agent name than "Mozilla/5.0" -.-

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I just experienced this as well. It looks like my Jolla's CalDAV client decided to go on a DELETE frenzy and deleted all entries from 6 month back (that's probably how far back it's configured to look) and infinitely into the future. This really sucks. I have tons of lost calendar entries and wasn't clever enough to set up backup :'(

I'm running the most recent SailfishOS (

decibyte ( 2014-12-30 17:16:07 +0300 )edit

@decibyte thanks for sharing your findings, although they are not as hoped for :(

Blizzz ( 2014-12-30 20:18:37 +0300 )edit

As a (temporary?) workaround I've created another user in ownCloud and shared my calender read-only with this user. Then I'm using the CalDAV link for that shared calendar from the read-only user on my phone. Then I'm still able to look things up, but I need another device (or use the browser) to add/update entries.

decibyte ( 2015-01-07 23:19:24 +0300 )edit

I've filed a bug report and started a conversation with the developers to try and fix this issue (if it's not already fixed). Please join the conversation if you have anything to add.

decibyte ( 2015-02-04 11:34:14 +0300 )edit

Seemingly random deletion of appointments happened to me too when I tried the caldav account on Jolla, syncing with owncloud. Before, during and after I have been syncing with Thunderbird and n9. Have been waiting for more than a year to see caldav sync work with owncloud, so I could switch from n9 to Jolla.

edgar ( 2015-03-03 16:43:54 +0300 )edit

2 Answers

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answered 2017-12-23 10:31:02 +0300

dag gravatar image

This still happens. Now running and it happend to me last week. Do have backups and restored the freshest one. But also here deleted all entries 6 months back. Both from my OwnCloud account AND my Davical account.

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Deletion of entries outside the sync window is a known bug. I'm working on its correction, see https://git.merproject.org/mer-core/buteo-sync-plugin-caldav/merge_requests/34

Damien Caliste ( 2017-12-23 15:48:18 +0300 )edit

But this was deletion of events within the sync window.

dag ( 2017-12-23 20:49:39 +0300 )edit

Happened to me twice as well this year (over a usage period of the last two years). All events within the sync window were deleted for one or several synced calendars.

birefringence ( 2017-12-24 00:06:15 +0300 )edit

Sorry, was mislead by the six months back stuff. @birefringence, the complete deletion is still happening with the testing packages from Chris Adams?

Damien Caliste ( 2017-12-24 11:10:36 +0300 )edit

This is stock Sort of assumed that all potential changes/solutions for a problem at least 2 years old would be integrated into a release that is some weeks old :-) Where can I find the testing packages?

dag ( 2017-12-24 11:29:53 +0300 )edit

answered 2018-12-08 18:45:04 +0300

Kobold gravatar image

It just hit me as well, using SFOS (X and XA2) and Nextcloud 14.0.4 Does anybody have any pointer to a possible solution?

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I typically encounter these deletion problems only with recurring events - especially, if I change one single instance out of a recurring sequence, the Sailfish CalDAV sync tends to delete the complete sequence on the server. I've seen this happen mainly with Zimbra, less with Owncloud. It did get better after the update to 2.1..x.x (latest 2.1.x) and seemed to work for quite some time, but now the problem is back (while still being on 2.1.x.x).

dyraig ( 2018-12-11 10:34:38 +0300 )edit
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Asked: 2014-11-24 13:08:30 +0300

Seen: 488 times

Last updated: Dec 08 '18