Device not starting with Pulldown resistor

MRUnbekanntOP commented 5 months ago

I have the following Problem: I originally Bricked my ReMarkable 2 by installing a chess mod, which brought my device into a boot loop when I tried to exit it. I also lost any direct ssh connection to the device, it just wasn’t connecting to anything. So, I ordered the Parts mentioned on this github page. Now my Problem: the device starts “normally” (entering the boot loop), when I connect nothing or just the USB pogo pins. But, when I connect the type-c Breakout board and pull down B8 (I used a 10k resistor from an Arduino set), The Device would not start, not even when I press the button. I have a male type-C breakout board, so the orientation of the port is not the Problem. Also, when I disconnect the Pulldown, the device enters the bootloop again after about 10s. This behavior is also independent from the Pogo pins (I also theoretically get a stable connection for them, but they do not affect this problem in any way). I also thought that this may just be a display setting in recovery mode, but the dmesg also does not show anything, neither with pulldown nor without.

Etn40ff commented 5 months ago

The Device would not start, not even when I press the button what do you mean by that?

MRUnbekanntOP commented 5 months ago

The Device would not start, not even when I press the button what do you mean by that?

When I pull down b8, the boot loop stops and, no matter what I do, the display does not show any changes, no matter what i do. So, it shows the behavior as if it was turned off and can‘t be started

Etn40ff commented 5 months ago

The display is not supposed to show any sign. You should see things happening in dmesg. If not check your pogo connection and the cable you are using

MRUnbekanntOP commented 5 months ago

I just tried it again. When I connect the Pulldown resistor, the display changes of the Device stopped, but I did not get any Reactions on dmesg. I also tried different micro-USB-Cables. I am certain that my connection to the Pogo pins is solid, and I do not have an Oscilloscope.

Etn40ff commented 5 months ago

Try things in this order:

take both the pogo pin and the resistor out of your remarkable
hold the power button long enough to make sure that the device is off
plug in the resistor
connect the pogo pins (it is a good idea to connect the pogo pins before starting and only plug the USB cable in your PC at this stage)
look at dmesg, your remarkable should appear now as FreeScale bla bla
if not press the power button
continue with the usual instructions

MRUnbekanntOP commented 5 months ago

I did precisely what you described, but I do not get any outputs on dmesg.

Eeems commented 5 months ago

I would recommend double-checking all the connections, you should be getting something on dmesg, even if it's not the expected output.

MRUnbekanntOP commented 5 months ago

@Etn40ff Thanks for your help. After your comment (specifically that there should be at least some output), I completely rebuilt my pogo pin connection and now I see the correct output. Again, thanks!

Etn40ff commented 5 months ago

I think that comment was due to @Eeems. Either way I am glad you fixed it

MRUnbekanntOP commented 5 months ago

Oh right, I missed that when writing the other comment. @Eeems Thank you

ddvk / remarkable2-recovery

Device not starting with Pulldown resistor #26