Portenta X8 not detected by ADB after OS update

Official Hardware Portenta Family Portenta X8
1

I'm using an Arduino Portenta X8 with a Max Carrier. I could use adb to push sketches, and access the linux shell, but after an OS update, the adb devices command no longer detects the device, even though it is connected properly according to lsusb.

The boot sequence is correct based on the LEDs, first the white LED turns off, then in appr. 10 seconds the blue LED starts blinking.

I performed the update according to this part (https://docs.arduino.cc/tutorials/portenta-x8/user-manual/#update-using-uuu-tool) in the docs, from version 674 to 861, which is the latest version at the time.

I've found this topic (Portenta X8 not working after update) which describes a similar issue. I was also able to perform other OS updates, but none of them (399, 674, 844, 861) were able to be detected by ADB.

I've also tried:

  • Using USB-C to USB-C cable to connect the board to my pc
  • Trying with another linux pc
  • Trying with a macbook

None of which worked.

Is there anything else I should try?

Is there any way I can interact with the linux shell of the board so I can investigate this further (some serial header somewhere maybe)?

Many thanks for any suggestions!

2

I am late to the game here. I had so many issues with the X8, however there is a workaround that will get it connected and get it registered. Look for this post on the X8 forum:

Getting the Portenta X8 Connected to Arduino Cloud (Linux)