Current Beta 1 version of Volumio for UDOO send the startup logs to the serial console port, but does not support user access on it (see udoo.org/ProjectsAndTutorial … ial-cable/).
Opening a connection, however, is very simple.
Open any connection and login as root
Edit file
/etc/inittab
Change line
T0:23:respawn:/sbin/getty -L ttyS0 115200 vt100
into
#T0:23:respawn:/sbin/getty -L ttyS0 115200 vt100
T0:23:respawn:/sbin/getty -L ttymxc1 115200 vt100
Save the file
Reboot
shutdown -r 0
If you look at serial console, you’ll now see the prompt, and you will be able to login normally.
Note: that’s the main console, while you type you might see console messages popping up, with all connected side effects
However, the connection will be always available, independently from the network situation.
Ciao
Giorgio