RE: My Raspberry Pi 4 does not boot?

tony1959 — Tue, 07 Jul 2020 10:38:04 GMT

Hi,

I have this problem too, that my pi4 does not boot.

If I power it up with no SD card, I get the message no SD card found. Which is obviously correct.

The green led flashed 4 times, off for longer and then flash 4 times etc, I think indicating it is searching for a device to boot from.

If I power it with SD card (latest UBUNTU image, lts 20xxx) the green led lights up, and flashes once, and then it is off.

On the connected screen there is no signal received (none at all: no blink or blank or whatever).

I replaced the bootloader already - the one downloadable via the Raspberry Pi Imager (v1.2). But no improvement.

The same sd card in a different (Pi3) boots fine.

Tried different power sources already, but no result.

Can anyone advise?

Ton

RE: My Raspberry Pi 4 does not boot?

cstanton — Tue, 22 Oct 2019 17:30:01 GMT

It's an interesting new feature of the Raspberry Pi 4 that the bootloader can be re-flashed. I wonder what capabilities it exposes, aside from improved PoE capability.