Adding this because it was frustrating for me and I could not remember this solution when setting up a new device.

Firing up a valid VPN connection from these instructions (mostly) gave me the message:
"VPN connection XXXX failed because there are no vpn secrets."

This setup uses a USERNAME / PASSWORD for authentication.
Changing username/pass to remove ALL non-alphanumeric characters from the BOTH the username and password fixed this.
This requires making changes with your provider credentials
ex: my_username => my123username

I'm pretty sure this is an encoding issue, but I'm not sure where to bug-post it.

@unisuperbox said in CardDav (contacts) support:

@vmbonn

As you can see from this thread, we really need help with this area! Maybe you could pick up the contacts sync bits and make them what you want to see.

links!
It's really hard to find stuff - if you know where the code is, who to talk to, where to look, tell it everywhere!

Dekko 2 is released in the openstore !!

announce: https://forums.ubports.com/topic/1750/dekko-0-1-6-beta2-released

@advocatux , I'm more than happy to file - ( I came back to devel yesterday after filing some Q/A on rc )
I just really prefer to have a working VPN while I'm doing that...I get it though - I guess publicizing what I'm asking potentially breeds a feedback-less loop that makes the devel stale

FWIW, it appears that the original problem was an IP change for my VPN server - changing local config fixed.
bad timing.

-ed-
haha! thanks @hummlbach

adb shell
tail -f  /var/log/syslog