Did you read this thread, apparently in (at least some) v1.4 PCB’s the UM3204 was soldered on incorrectly which leads to the GPIO pins being 1.8V (the x86 standard) instead of 3.3V (the expected standard).
Did you read this thread, apparently in (at least some) v1.4 PCB’s the UM3204 was soldered on incorrectly which leads to the GPIO pins being 1.8V (the x86 standard) instead of 3.3V (the expected standard).