I have TX2 and spacely carrier board from Connecttech, and the ubuntu version is 16.04.
I flashed Jetpack 3.1 on tx2 successfully so I can see the ubuntu GUI from the monitor. But still have a problem with USB connection.(Mouse and keyboard do not work. This seems because there is no L4T for the carrier board, CTI-L4T.)
To solve this problem, I flash CTI-L4T on TX2. But after flashing, I cannot see the GUI while the fan is working.
I already checked by ssh connection to the tx2 from the host computer, but its impossible to access to the TX2.
Connect Tech Support is looking into the issues you are encountering when flashing your TX2 modules. In the meantime could you please send the product number of your the TX2 module you are encountering the issue with?
The product number is located on the sticker on the side of the TX2 module underneath the serial number (S/N).