At the moment the only Ubuntu Kernel available is 4.2 for Ubuntu 14.04.
We are planning to release soon an update for Ubuntu which include 40pin I/O and HDMI audio on both 14.04 and 16.04 with the new Ubuntu 4.4 Kernel.
It is going to be published in the coming weeks.
If you want to help us, you could drop an email to "community AT up-board.org" and we will give you access to the private PPA of UP ubuntu kernel for beta testing once available.
Thank you for trying it out. Unfortunately that is not the one we will use with Ubuntu.
The Ubuntu 4.4 kernel for UP will be based on the Ubuntu 16.04 4.4 kernel (while the ubilinux kernel is based on the Debian 4.4 kernel backports).
PS: Thanks for requesting the beta access to the kernel for testing!
I can give you good news as we are currently testing 4.4 kernel for both ubuntu 14.04.5/16.04
We will release it as soon as our internal testing will be complete, hopefully in the coming week.
Yes, we are now enabling access to beta testers, you should receive an email shortly.
for f in `ls -d /sys/class/gpio/gpiochip*`; do echo $f `cat $f/label $f/base $f/ngpio` ; done
sudo add-apt-repository ppa:ubilinux/up