So! I did make a test since I was flashing a new image …
(unrelated, but seems that activation HDMI log - [RESIN_HOST_LOG_TO_DISPLAY] - plunged my device into an infinite reboot loop. – that will be for another investigation tomorrow…
So that new image.
Plugged the 2 cables. I’m using serial UART (connections made on ground and GPIO15).
When you boot up for the very first time, it stays stuck (same as earlier).
Now, without rebooting. As soon as I disconnect GPIO15, it continues to boot up, registers on resin and starts downloading it’s things.
Note: it isn’t an issue anymore on future reboots.
Now, I also tried once more with a new image and this time disconnected the cable and reconnected right away once it had started going again. A lot appeared ont the screen and it restarted. I couldn’t take a picture. ^^
Other question (slightly related maybe).
What’s the difference between [RESIN_HOST_CONFIG_enable_uart] to enabled and also having to add RESIN_HOST_CONFIG_dtoverlay = pi3-miniuart-bt ?