Two Luckfox Pico A W4G boards suddenly failed

2026-06-29 8:08

I recently started working with two Luckfox Pico A boards equipped with a 4G module connected to the M.2 slot, along with a MIS5001 camera.

I successfully configured the software so that the boards could connect to the Internet via 4G and stream video. Everything was working as expected. However, both boards suddenly stopped working. They rebooted and then failed to boot properly. The only output I can get from the UART console is:

During testing, I continuously monitored the CPU temperature, and it always stayed within a normal range (below 70°C).

Before one of the boards failed, it reported a power-related error, even though I was using what I believe is a good GaN power adapter.

Code: Select all

[   70.993136] rv1106_npor_powergood_isr voltage jitter detected
[   70.993412] rv1106_npor_powergood_isr voltage jitter detected
[   70.994487] rv1106_npor_powergood_isr voltage jitter detected
ANALYZER:E:stats disorder, latest:1572, new:1572
[   70.995162] rv1106_npor_powergood_isr voltage jitter detected
[   70.995845] rv1106_npor_powergood_isr voltage jitter detected

This makes me suspect that there may be an issue with the power supply circuitry, since both boards failed unexpectedly without any warning.

Could there be something wrong with my hardware setup or software configuration that might have caused this? Or is this more likely to be a hardware issue with the boards themselves?

2026-07-18 4:08

In most cases where we've seen the rv1106_npor_powergood_isr voltage jitter detected warning, it was due to a power rail short or a power supply issue. A short would make the chip hot, but that doesn't appear to be happening here. The continuous RKUART output suggests the CPU is at least working and has entered maskrom mode. Have you attempted to re‑flash the firmware and observe the DDR.bin output?