CalDAV-Sync geht auf einem Handy nicht

Hallo zusammen


Ich habe einen Kalender auf Synology und einen auf einer Nextcloud. Ich synchronisiere diese Kalender mit meinem Handy (Samsumg S7) und mit zwei unterschieldichen Samsung-Tablets.
Einzig mit dem Handy meiner Frau geht der Sync nicht.
Handy: Samsung Galaxy S7, Android 8.0.0, CalDAV-Sync 0.4.32, Kalender App: aCalendar
Wenn ich einen Eintrag im Kalender erstelle und synchronisiere, dann wird der Termin nicht synchronisiert. Unter "Konte Synchronisieren" wird auch der letzte Zeitpunkt nicht aktualisiert.
Wenn ich danach in die Kontoeinstellungen gehe und die unterste Option (Synchronisieren beim Einschalten des...) aktiviere, dann wird der Sync sofort ausgeführt.
Jetzt kann ich im Kalender wieder Termine löschen und hinzufügen. Beim folgenden Synchronisieren passiert dann wieder nichts. Erst wenn ich die vorher gesetzte Option wieder deaktiviere, wird der Sync sofort ausgeführt.
Somit müsste man für jeden Sync die Option aus, rsp. wieder einschalten.
Auf allen anderen Geräten funktioniert das ohne diese Option.
CalDAV-Sync wurde bereits deinstalliert und neu installiert, leider ohne Erfolg.


Vielleicht kenn sich jemand damit aus?
Gruss
Markus


Wenn ich das Log aktiviere erhalte ich einen Connection Error:

Code:

---



20201230T114209Z V org.dmfs.syncadapter.SyncAdapter background data setting:  background data value:true
20201230T114209Z V org.dmfs.syncadapter.SyncAdapter network type: 1  newtork subtype: 0  is connected: true  is available: true
20201230T114209Z V org.dmfs.syncadapter.SyncAdapter starting sync ...
20201230T114209Z V org.dmfs.caldav.syncadapter.SyncAdapter task app not found
20201230T114209Z V org.dmfs.caldav.syncadapter.SyncAdapter ignore_settings, force, ignore_backoff
20201230T114209Z D org.dmfs.caldav.syncadapter.SyncAdapter Sync pending operations ... false
20201230T114209Z D org.dmfs.caldav.syncadapter.SyncAdapter is Upload: false
20201230T114209Z V org.dmfs.caldav.syncadapter.SyncAdapter running regular sync
20201230T114209Z D org.dmfs.calendar.CalendarManager mutators column seems to be PRESENT
20201230T114209Z V org.dmfs.calendar.CalendarManager  ------ checking columns from attendees view, create at least one event on your device to make this work ------
20201230T114209Z V org.dmfs.calendar.CalendarManager attendees table is ok
20201230T114209Z V org.dmfs.calendar.CalendarManager  ------ done ------
20201230T114209Z D org.dmfs.calendar.CalendarManager uid2445 column seems to be PRESENT
20201230T114209Z V org.dmfs.caldav.syncadapter.SyncAdapter synctoken: http://sabre.io/ns/sync/9
20201230T114209Z V org.dmfs.caldav.syncadapter.SyncAdapter Syncing calendar 'Personal' with id 14 at caldavs://XXX.goip.de/remote.php/dav/calendars/Gemeinsam/personal/ for Gemeinsam
20201230T114212Z V org.dmfs.dav.methods.DavOptions Code : 200
20201230T114212Z I org.dmfs.dav.Dav enabling preemptive Authentication
20201230T114216Z V org.dmfs.caldav.syncadapter.SyncAdapter synctoken: http://sabre.io/ns/sync/9
20201230T114216Z V org.dmfs.dav.CalDav using sync-collection
20201230T114220Z V org.dmfs.dav.CalDav new item: 325d94b9-60e5-46f8-96ad-ecfc67594ac2.1609328524150.ics 0 4cba7a032e37c35406c4ab49f8a46d84
20201230T114220Z V org.dmfs.dav.CalDav sync-token: http://sabre.io/ns/sync/10
20201230T114220Z V org.dmfs.sync.Synchronator pairing entities
20201230T114220Z V org.dmfs.calendar.CalendarEntity loading event data for null
20201230T114220Z V org.dmfs.calendar.Event loaded UID  null
20201230T114220Z V org.dmfs.sync.Synchronator sorting 6 pairs
20201230T114220Z I org.dmfs.sync.Synchronator r/u/n: 0/0/2
20201230T114220Z V org.dmfs.vcalendaradapter.VCalendarSource preloading 1 entities
20201230T114220Z V org.dmfs.dav.CalDav multiget called
20201230T114223Z V org.dmfs.sync.entities.calendar.SyncAlarm create valarm : 15  1
20201230T114223Z V org.dmfs.sync.entities.calendar.SyncAlarm valarm loaded: 15  1
20201230T114223Z V org.dmfs.sync.Synchronator conflicts: 0
20201230T114223Z V org.dmfs.icalendaradapter.VEventAdapter committing VEvent null
20201230T114223Z V org.dmfs.icalendaradapter.VEventAdapter event status is 1
20201230T114223Z V org.dmfs.sync.entities.calendar.SyncAlarm updating alarm 15
20201230T114223Z V org.dmfs.icalendaradapter.VCalendarAdapter commiting VCalendar null
20201230T114223Z V org.dmfs.icalendaradapter.VCalendarAdapter uploading event https://XXX.goip.de/remote.php/dav/calendars/Gemeinsam/personal/dc63c0d7-36e1-49f7-8195-76ae79b314b8.1609328543754.ics
20201230T114223Z I org.dmfs.dav.CalDav using PUT to create event
20201230T114227Z V org.dmfs.dav.methods.DavPut Code : 201
20201230T114227Z V org.dmfs.dav.methods.DavPut ETag : cbfd3565bd0b016f318153c9607be2ba
20201230T114227Z V org.dmfs.icalendaradapter.VCalendarAdapter ETAG: cbfd3565bd0b016f318153c9607be2ba
20201230T114227Z V org.dmfs.calendar.EventEditor update by id 1741 https://XXX.goip.de/remote.php/dav/calendars/Gemeinsam/personal/dc63c0d7-36e1-49f7-8195-76ae79b314b8.1609328543754.ics
20201230T114227Z V org.dmfs.calendar.Event committing tz Europe/Zurich
20201230T114227Z V org.dmfs.calendar.Event storing organizer gemeinsam@dr-feelgood.ch
20201230T114227Z I org.dmfs.carddav.syncadapter.BatchOperations executing 3 database operations
20201230T114227Z V org.dmfs.carddav.syncadapter.BatchOperations execution finished
20201230T114227Z I org.dmfs.carddav.syncadapter.BatchOperations executing 1 database operations
20201230T114227Z V org.dmfs.carddav.syncadapter.BatchOperations execution finished
20201230T114227Z I org.dmfs.carddav.syncadapter.BatchOperations executing 2 database operations
20201230T114227Z V org.dmfs.carddav.syncadapter.BatchOperations execution finished
20201230T114227Z I org.dmfs.syncadapter.SyncAdapter sync complete




App: org.dmfs.caldav.lib
App version: 0.4.32
OS version: 26
OS Info: samsung/heroltexx/herolte:8.0.0/R16NW/G930FXXU8ETI2:user/release-keys
Manufacturer: samsung
Date: Wed Dec 30 12:52:19 GMT+01:00 2020






20201230T114807Z V org.dmfs.syncadapter.SyncAdapter background data setting:  background data value:true
20201230T114807Z V org.dmfs.syncadapter.SyncAdapter network type: 1  newtork subtype: 0  is connected: true  is available: true
20201230T114807Z V org.dmfs.syncadapter.SyncAdapter starting sync ...
20201230T114807Z V org.dmfs.caldav.syncadapter.SyncAdapter task app not found
20201230T114807Z V org.dmfs.caldav.syncadapter.SyncAdapter org.dmfs.SYNC_COLLECTIONS
20201230T114807Z V org.dmfs.dav.Dav get principal /remote.php/dav/
20201230T114815Z I org.dmfs.dav.Dav found principal: /remote.php/dav/principals/users/Gemeinsam/
20201230T114815Z V org.dmfs.dav.CalDav get calendars https://XXX.goip.de/remote.php/dav/principals/users/Gemeinsam/
20201230T114819Z V org.dmfs.dav.CalDav found calendar user address /remote.php/dav/principals/users/Gemeinsam/
20201230T114819Z V org.dmfs.dav.CalDav found calendar user address mailto:markus%40dr-feelgood.ch
20201230T114819Z I org.dmfs.dav.CalDav also looking for calendar home sets in /remote.php/dav
20201230T114819Z V org.dmfs.dav.CalDav get calendars /remote.php/dav/
20201230T114822Z V org.dmfs.dav.CalDav looking for calendars in https://XXX.goip.de/remote.php/dav/calendars/Gemeinsam/
20201230T115022Z E org.dmfs.dav.Dav connection error - trying again
java.net.SocketTimeoutException: Read timed out
at com.android.org.conscrypt.NativeCrypto.SSL_read(Native Method)
at com.android.org.conscrypt.OpenSSLSocketImpl$SSLInputStream.read(OpenSSLSocketImpl.java:766)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:108)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:196)
at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:88)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:179)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:185)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:240)
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:264)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:284)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:126)
at org.apache.http.impl.client.DefaultRequestDirector.executeOriginal(DefaultRequestDirector.java:1421)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:700)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:560)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:492)
at org.dmfs.dav.t.b(Unknown Source:69)
at org.dmfs.dav.t.a(Unknown Source:20)
at org.dmfs.dav.b.b(Unknown Source:152)
at org.dmfs.dav.b.a(Unknown Source:47)
at org.dmfs.dav.b.b(Unknown Source:241)
at org.dmfs.caldav.syncadapter.a.a(Unknown Source:139)
at org.dmfs.caldav.syncadapter.a.a(Unknown Source:335)
at org.dmfs.p.a.onPerformSync(Unknown Source:989)
at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:272)


20201230T115026Z V org.dmfs.dav.CalDav resourcetypes DAV::collection urn:ietf:params:xml:ns:caldav:schedule-inbox
20201230T115026Z V org.dmfs.dav.CalDav resourcetypes DAV::collection urn:ietf:params:xml:ns:caldav:calendar
20201230T115026Z V org.dmfs.dav.CalDav resourcetypes urn:ietf:params:xml:ns:caldav:schedule-outbox DAV::collection
20201230T115026Z V org.dmfs.dav.CalDav non-calendar collection found at https://XXX.goip.de/remote.php/dav/calendars/Gemeinsam/outbox/
20201230T115026Z V org.dmfs.dav.CalDav resourcetypes DAV::collection
20201230T115026Z D org.dmfs.calendar.CalendarManager mutators column seems to be PRESENT
20201230T115026Z I org.dmfs.syncadapter.SyncAdapter sync complete




App: org.dmfs.caldav.lib
App version: 0.4.32
OS version: 26
OS Info: samsung/heroltexx/herolte:8.0.0/R16NW/G930FXXU8ETI2:user/release-keys
Manufacturer: samsung
Date: Wed Dec 30 12:52:38 GMT+01:00 2020

---