I just set up my UDOO using the minimal version of UDOObuntu v2.2.0. In the documentation, I see it is possible to disable HDMI and go...
sudo nano /usr/sbin/lightdm-session
What I did is using gtf to create the new mode. Then in the file /usr/sbin/lightdm-session I added the following before loading resources:
I have te same problem, did you already solve it?
Separate names with a comma.