As reported on the kolab users list today (http://lists.kolab.org/pipermail/users/2019-July/021701.html) my kolab install on Ubuntu 18.04 is no longer showing calendar or contact entries in either the roundcube client or via CalDAV/CardDAV. When I look through the imap spool, all the information looks like it is still there, but it isn't being shown. The kolab package versions I am running are:
dpkg -l *kolab* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-========================================-=========================-=========================-===================================================================================== ii kolab 16.0.1-19 all Metapackage for Kolab Groupware Server ii kolab-cli 0.8.13-0~kolab3 all Command-line utilities for Kolab ii kolab-conf 0.8.13-0~kolab3 all Configuration management for Kolab un kolab-content-filter <none> <none> (no description available) ii kolab-freebusy 1.1.2-0~kolab2 all Free/Busy for Kolab Groupware ii kolab-imap 16.0.1-19 all IMAP server for Kolab Groupware server ii kolab-ldap 16.0.1-19 all LDAP server for Kolab Groupware server ii kolab-mta 16.0.1-19 all MTA server for Kolab Groupware server ii kolab-saslauthd 0.8.13-0~kolab3 all SASL Authentication Daemon for Kolab ii kolab-schema 3.3-0~kolab1 all LDAP schema files for Kolab Groupware ii kolab-server 0.8.13-0~kolab3 all Kolab Groupware Server ii kolab-syncroton 2.3.15-0~kolab5 all ActiveSync for Kolab Groupware ii kolab-webadmin 3.2.14-0~kolab2 all Kolab administration web interface ii kolab-webclient 16.0.1-19 all Webmail client for Kolab Groupware server ii kolab-xml 0.8.13-0~kolab3 all Kolab XML format wrapper for pykolab un libkolab0 <none> <none> (no description available) ii libkolab2 2.0~dev20151230-0~kolab8 amd64 Maps KDE containers to Kolab formats un libkolabxml1 <none> <none> (no description available) ii libkolabxml1v5 1.2.0-0~kolab2 amd64 Libkolabxml is the reference implementation of the Kolab XML format ii php-kolab 2.0~dev20151230-0~kolab8 amd64 PHP bindings for Kolab Library un php-kolab-kde <none> <none> (no description available) ii php-kolabformat 1.2.0-0~kolab2 amd64 PHP bindings for Kolab Format 3.0 XML parsing ii pykolab 0.8.13-0~kolab3 all Kolab Groupware daemon and utilities ii python-kolab 2.0~dev20151230-0~kolab8 amd64 Python bindings for Kolab Library un python-kolab-kde <none> <none> (no description available) ii python-kolabformat 1.2.0-0~kolab2 amd64 Python bindings for Kolab Format 3.0 XML parsing un roundcube-plugins-kolab <none> <none> (no description available) ii roundcubemail-plugin-kolab-activesync 1:3.5.0-0~kolab2 all kolab_activesync plugin for Roundcube ii roundcubemail-plugin-kolab-addressbook 1:3.5.0-0~kolab2 all kolab_addressbook plugin for Roundcube ii roundcubemail-plugin-kolab-auth 1:3.5.0-0~kolab2 all kolab_auth plugin for Roundcube ii roundcubemail-plugin-kolab-config 1:3.5.0-0~kolab2 all kolab_config plugin for Roundcube ii roundcubemail-plugin-kolab-delegation 1:3.5.0-0~kolab2 all kolab_delegation plugin for Roundcube ii roundcubemail-plugin-kolab-files 1:3.5.0-0~kolab2 all kolab_files plugin for Roundcube ii roundcubemail-plugin-kolab-folders 1:3.5.0-0~kolab2 all kolab_folders plugin for Roundcube ii roundcubemail-plugin-kolab-notes 1:3.5.0-0~kolab2 all kolab_notes plugin for Roundcube ii roundcubemail-plugin-kolab-tags 1:3.5.0-0~kolab2 all kolab_tags plugin for Roundcube ii roundcubemail-plugin-libkolab 1:3.5.0-0~kolab2 all libkolab plugin for Roundcube ii roundcubemail-plugins-kolab 1:3.5.0-0~kolab2 all skinnable AJAX based webmail solution - Kolab plugins ii roundcubemail-skin-kolab 0.4.1-0~kolab6 all skinnable AJAX based webmail solution - Plesk skin
And the full dpkg -l output can be found here: https://git.kolab.org/P26
The mail.log file and apache access.log failes do not show anything interesting, but if the contents would be useful I can sanitize them and post.