In all the articles and reviews about Ubuntu Phone, I have been missing one crucial information: What protocols are supported to synchronise your contacts and calendars with your device? CalDav/GroupDav? ActiveSync? Gmail?


3 Answers 3


It is possible to sync your Official Aquaris Ubuntu Edition with e.g. Owncloud using CardDAV. This is what I did (see wiki.ubuntuusers.de for source):

  1. First I added the certificate of my site to the folder /usr/share/ca-certificates and updates the ca-cert database, since it is self-signed:

    sudo mount /dev/loop0 / -o remount,rw
    sudo cp /home/phablet/Downloads/server.crt /usr/share/ca-certificates

    Add a star to the new certificate while running the configuration

    sudo dpkg-reconfigure ca-certificates
  2. Add the syncevolution configuration:

    syncevolution --keyring=no --configure --template webdav username=<USERNAME> password=<PASSWORD> syncurl="in-its.de/owncloud" target-config@owncloud
    syncevolution --configure --template SyncEvolution_Client sync=none syncURL=local://@owncloud username= password= peerIsClient=1 owncloud
    syncevolution --configure database=https://<SERVER>/owncloud/remote.php/carddav/addressbooks/<USERNAME>/contacts backend=carddav target-config@owncloud contacts
    syncevolution --configure sync=two-way backend=contacts database="Persönlich" owncloud contacts
  3. Run sync:

    syncevolution --sync slow owncloud contacts

That made all my Owncloud contacts available on my Ubuntu Phone.

And CalDAV works similar:

syncevolution --configure database=https://<SERVER>/owncloud/remote.php/caldav/calendars/<USERNAME>/personal backend=caldav target-config@owncloud calendar
syncevolution --configure sync=two-way backend=events database="Persönlich" owncloud calendar

And then sync it:

syncevolution --sync slow owncloud calendar

So CalDAV and CardDAV are working!

  • So you have to manually run those commands from time to time?
    – mat
    Mar 31, 2015 at 9:50
  • I guess you could add the script to your cron (e.g. /etc/cron.hourly), but I didn't try it.
    – Tim
    Apr 2, 2015 at 7:48
  • @user1039462 The only command you need to run is syncevolution --sync owncloud calendar. The other commands are for configuration & once the configuration was done, it is saved in the system. Apr 10, 2015 at 8:27

I finally managed to connect to my phone by updating the repositories with

sudo add-apt-repository ppa:phablet-team/tools && sudo apt-get update

But no after setting everything up I get an error when running the sync

[ERROR @baikal] transport problem: PROPFIND: Neon error code 1, no HTTP status: Server certificate verification failed: certificate issued for a different hostname, issuer is not trusted

So I guess I need some kind of certificate for my baikal server. Any idea how to fix this?

I installed owncloud on my NAS! Now everything works! Thanks for the instructions! But is the phone now keeping the contacts synced?


Not true at the moment...only can sync contacts and calendar from google. There is no way to setup other CalDav/CardDav or ActiveSync accounts via the Settings in Ubuntu Touch. If your online info doesn't reside with google services then your out of luck.

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