oops when I restart - works fine if I shut down and cold boot.

[jondowd]

My first post here - I'm new to SBCs and stoked I got my home webserver up and running on a Orange Pi 5 which boots from an NVMe (pats-self-on-back : -)

It runs great, pages are up, and it's all SO COOL, but it fails to do a restart... I can do a shutdown -h now, count to three and power it back up and all is well, but if I do a shutdown -r now it will go down, start back up, all the way to the login prompt but then barfs a long Oops message. God please... don't make me start over !

[Werner]

3 hours ago, jondowd said:

a long Oops message.

Which you won't share since we all have second sights, right?

 

Also armbianmonitor -u can be helpful.

 

I have an Opi5 with nvme here and reboot works fine.

[jondowd]

It's not that I won't share it - I was waiting for some instruction of what information was needed. It looks like this...

[ 15.261345] Internal error: Oops: 00000000960000004 [#1] SMP

and what other information can I give that would help diagnose my trouble?
After a restart, as the login prompt arrives - this comes on the screen and I can't seem get past it, other than powering the machine down and restarting it. Thank you for your help. Jon Dowd

Edited 13 hours ago by jondowd
spelling error

[Werner]

1 hour ago, jondowd said:

and what other information can I give that would help diagnose my trouble?

 

2 hours ago, Werner said:

Also armbianmonitor -u can be helpful.

 

[jondowd]

Thank you - Here are the results of armbianmonitor -u after moments after a shutdown -r now command. Following that command, the machine begins a shutdown, then appears to do a normal boot up, but immediately after seeing the login prompt I see this error message
[ 17.720772] Internal error: Oops: 00000000960000004 [#1] SMP

https://paste.armbian.com/ipeboqedoq

[Werner]

Cannot reproduce. Same board, same kernel: https://paste.armbian.com/difezakigu

 

Try swapping PSU to another (better) one and check connectors and wiring. Undervoltage can cause all sorts of hard-to-explain trouble.

[jondowd]

Thank you - A new, better PSU would be an inexpensive and easy fix. But being so new to this, I am only guessing which one to buy. Can you please recommend one? For example, which one do you use?
I appreciate your help very much.

[Werner]

Here are a few generic tips to consider:

- Going to something industrial grade is always good. mean-well would be entry-level here

- Phone chargers are not good for powering SBCs. They're designed to handle constant load while SBCs draw is variable depending on load.

- Usually SBCs prefer slight overvoltage. So it is usually not an issue to feed them with an PSU that outputs 5.1 or 5.2 volts since this compensates for losses across wires, connectors and the PCB anyway.

 

I personally have a mean well HRP-200-5 which powers all my sbcs but would be way too much for a single one.

Official chargers from Raspberry or Orangepi would do too since they already come with slight overvoltage by design.