I reinstalled the driver and same behaviour.

As mentioned before, I suspect that this has something to do with some change in the hw (power, etc), that cause the hanging of the driver, since a fresh reinstall of OS + kstars + INDI has not solved the issue. So I have switched to use a rasppi + ubuntu mate 16.04 and everything is working perfectly (I was using the netbook for the superior disk capacity / USB / screen capabilities wrt the rasppi)

Thus it is not necessary that you spend time connecting remotely to solve the issue, I imagine you have enough tasks on hand already. Many thanks for offering anyway.

If I happen to find out the root cause of this I'll let you know.