After power loss, boot never gets to white LED

[josepht]

Hi,

I got a RockPro64 that I set up about a week ago.  Board, EMMC, USB EMMC adapter, power supply, USB serial adapter, heat sink, enclosure, all from the Pine64 online store.  I followed the NOOB guide and flashed ayufan's bionic minimal (bionic-minimal-rockpro64-0.7.9-1067-arm64.img) to the EMMC.  I was able to connect over the serial console, boot, ssh, etc., everything working great.  Didn't power the device down, but did `sudo shutdown -r now` a time or two, no problems.

Then my house lost power for a bit, and it hasn't booted since.  The green light where the power connects comes on as it should whenever power is connected.  The lights on the ethernet port blink like normal.  But whenever I turn it on, the red LED near the power button blinks indefinitely and the white LED there never comes on.

I tried re-flashing the EMMC with the same image I'd used before (I was using dd both times), no improvement.

I tried connecting pins 23 and 25 as the "RockPro64 Main Page" suggests for bypassing SPI, no improvement.

I tried using the "recover" button as described in the "OTG mode" section on the "RockPro64 Main Page", no improvement -- white light never comes on, red light keeps blinking, nothing shows up on a desktop (as reported by lsusb) if I connect it to the USB 3 port.

The USB serial adapter's lights blink when I connect it and turn on the RockPro64, but nothing actually gets sent (as reported by minicom on my desktop, connected the same way I'd connected it successfully before).

I'd very much appreciate any suggestions as to how to troubleshoot this further.

Thanks,
-Joseph

When USB serial adapter's light blink this means there is message sending, please make sure the UART parameter setup correctly.

Hi, thanks for the reply!


It's set up correctly AFAICT, but I'm very new to this.  Here's what I've verified:

Starting with board disconnected from power and serial adapter disconnected from everything:
 - I made sure the serial adapter's yellow jumper is set to 3V3
 - I connected the serial adapter's GND to pin 6 on the board
 - I connected the serial adapter's RTX to pin 8 on the board

Then I plugged the serial adapter into my desktop's USB port.
 - Red light D3 and green light D5 on the serial adapter both come on solid at this point
 - `dmesg |grep usb` on the desktop shows this at the end:

```
[196690.938860] usb 1-13: new full-speed USB device number 53 using xhci_hcd
[196691.088292] usb 1-13: New USB device found, idVendor=1a86, idProduct=7523
[196691.088298] usb 1-13: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[196691.088302] usb 1-13: Product: USB2.0-Serial
[196691.089775] usb 1-13: ch341-uart converter now attached to ttyUSB0
```

so then I run `minicom -D /dev/ttyUSB0 -b 1500000`

With minicom open, I connect power to the board.
 - Green light D5 on serial adapter starts blinking (red light D3 stays on solid, no other lights do anything)
 - But I see nothing showing up in minicom.  It just sits there with:

```
Welcome to minicom 2.7
 
OPTIONS: I18n
Compiled on Nov 15 2018, 20:18:47.
Port /dev/ttyUSB0, 21:31:04
 
Press CTRL-A Z for help on special keys
 ```

and a status bar at the bottom:
```
CTRL-A Z for help | 1500000 8N1 | NOR | Minicom 2.7 | VT102 | Offline | ttyUSB0 
```

At this point, I've tried turning the board off an on with the power button, it doesn't change the symptoms -- green light D5 is on solid whenever the board is powered off, and blinks whenever the board is powered on, red light D3 is on solid regardless, and minicom shows nothing.

Don't know what to try next...