Hello!
My Snickerdoodle arrived last week and I have been playing around trying to get something working.
I have installed Ubuntu 16.04 LTS (the image from the krtkl download section) and I have connected to the Snickerdoodle over serial.
I am presented with the following:

I have tried the default
snickerdoodle, snickerdoodle combination which is mentioned in the
Bringing up Snickerdoodle thread but that password does not work in 16.04 as far as I can tell.
I cannot find any information on what the default password actually is. Can anyone shed some light? Have I just been looking in the wrong places?