@lduboeuf Don't worry alarms can be setted again relatively fast, and calendar events... principally was in CalDAV remote server so... nothing losed. I don't know what happened. Aproxly ten days ago simply just stop working, until... now. Thanks again and if you want to try somehing for debbuging, let me know.

Hi @advocatux , I have tried the command proposed and works successfully. Thanks for your answer.

I have solved the issue. The fail was a media scanner corrupted database located in: /home/username/.cache/mediascanner-2.0/mediastore.db Once removed the file and rebooted the phone, new database was created succesfully. I left this topic because may be useful to other users with the same problem. Thanks to all the developers for keeping this project alive