I have been using google calenders via korganizer successfully for some time in the past. Now I realized that added contacts are not uploaded to the google servers anymore (they don't appear on their web-calendar anymore). They seem to be persistent in korganizer.
I tried removing and adding the resource for the sub calendar folder, restarting akonadi, toggling the resource online/offline and other things, without success.
Any ideas how fix it, maybe without loosing the events I added and which have not been synced? Any ideas how to debug (can I see it if I start akonadi on the commandline for instance)?
I use kde 4.12 with latest updates from kubuntu 13.10 sources.
Thanks!

Hi,

what version of KDE, Akonadi and LibKGAPI do you have?

Please open kdebugdialog and enable "LibKGAPI" and "LibKGAPI (raw data)", then restart Akonadi from console (akonadictl restart). Now you should see all requests and data exchanged between the Akonadi Calendar Resource and Google. Try to perform some operation with the calendar and see what it prints to console. Past the output here, just make sure you remove any sensitive data from it (emails addresses etc.)

Sorry, I have seen your reply too late. I just removed the resource and added it again and wanted to report back. This seemingly fixed the problem, but as expected I lost my events which were not synced yet. Kubuntu package is libkgapi2-2. I saw related akonadi messages like
ItemRetrieverException : Unable to contact resource
akonadi_googlecalendar_resource_2', error message: 'Could not get owner of name'
on the command line. I can't reproduce more now.
Probably the bottom line of the story is that akonadi should display GUI info if it can't write events to the resource. Then I had stopped adding events earlier and reset the resource.
Thanks nevertheless!

This messages usually mean that the resource has crashed while doing some operation (possibly uploading changes to the server). If this happens again, please don't hesitate to open a bug report

Cheers,
Dan

I am on KDE 4.13.0 , latest Kubuntu with all updates and I also struggle with google calendar updates.

Sometimes it works, then it stops working. Just now 3 out of 5 "tasks" got synced, then nothing happens. It seems as if they task has a start date it will NOT be synced?

Have removed/recreated the resource once when seemingly nothing happened.

I also encountered the problem again after an update to KDE from kubuntu 14.04 packages. I.e the problem reappears after recreating the akonadi resource. I added a comment to https://bugs.kde.org/show_bug.cgi?id=125952 which exists since 2006 and describes this problem . I think the google akonadi resource is simply broken and should be removed.

Just to add that after upgrade to KDE 4.13.2 this now seems to work

Glad it's working for you now.