Hi there
I found some old posts relating to -maybe seems- the same issue, but should had been resolved with kernel updates 4 years ago so…
Got a Raspberry Pi 4B, with Raspberry Pi Os Lite 64bits installed, last Bookworm version.
There’s a waveshare poe hat on it. 4x GPIOout (LOW actives, current from 3,3V) and 4x GPIOin (LOW actives, external pull-up resistor) driving some opto-couplers. Everything works fine, with Poe, or just with the raspberry official power adaptor .
But SOMETIMES, when I shutdown or reboot the system with command line, after 3 seconds, leds turn off, then won’t never turn on again. Obviously, the Pi doesn’t reboot, that’s the big problem! And I’m not sure the shutdown is properly done…
I can’t see anything wrong in the logs… maybe Bluetooth services that are longer than other to switch off…
Just to be sure :
Usually, leds turn off after 3 sec, for approx 1 sec, and then red led turns on again ; + green led blanks again if the system reboot…?
If I unplug the power and plug again, the Pi boots normally…
I tested several stuff, from reinstall the system, try it without modifications, retry bullseye, change the sd card, mount and unmount properly on another laptop…
I can never reproduce this behavior…
Maybe the Poe hat, but I didn’t do enough tests with/without it to be able to statistically incriminate it.
Any idea ?!
Thanks !
I found some old posts relating to -maybe seems- the same issue, but should had been resolved with kernel updates 4 years ago so…
Got a Raspberry Pi 4B, with Raspberry Pi Os Lite 64bits installed, last Bookworm version.
There’s a waveshare poe hat on it. 4x GPIOout (LOW actives, current from 3,3V) and 4x GPIOin (LOW actives, external pull-up resistor) driving some opto-couplers. Everything works fine, with Poe, or just with the raspberry official power adaptor .
But SOMETIMES, when I shutdown or reboot the system with command line, after 3 seconds, leds turn off, then won’t never turn on again. Obviously, the Pi doesn’t reboot, that’s the big problem! And I’m not sure the shutdown is properly done…
I can’t see anything wrong in the logs… maybe Bluetooth services that are longer than other to switch off…
Just to be sure :
Usually, leds turn off after 3 sec, for approx 1 sec, and then red led turns on again ; + green led blanks again if the system reboot…?
If I unplug the power and plug again, the Pi boots normally…
I tested several stuff, from reinstall the system, try it without modifications, retry bullseye, change the sd card, mount and unmount properly on another laptop…
I can never reproduce this behavior…
Maybe the Poe hat, but I didn’t do enough tests with/without it to be able to statistically incriminate it.
Any idea ?!
Thanks !
Statistics: Posted by CMZoizo — Thu May 02, 2024 9:37 pm — Replies 1 — Views 23