Nextcloud+raspberry pi 4b+ Ubuntu Core rainbow screen (not booting)


My Raspberry has stopped booting. It looks it’s a problem with the SD card, as I have tried with another one and it boots. The SD card can be read in my computer, so I guess it’s not corrupted. Can you help me in making it boot again?

Nextcloud version (eg, 20.0.5): I guess it's 21.x but not shure as it updates automatically
Operating system and version (eg, Ubuntu 20.04): Ubuntu Core 20.04
Apache or nginx version (eg, Apache 2.4.25): no idea
PHP version (eg, 7.4): no idea

The issue you are facing:

Is this the first time you’ve seen this error? (Y):

Steps to replicate it:

  1. The RPI doesn’t boot with the sd card that holds my OS and Nextcloud
  2. It works with other SD Cards
  3. It shows the raibow screen

I can’t show any log as It doesn’t boot

If you are stuck on the rainbow screen it is either an SD-Card issue or an OS issue.

Read here: from which I take away that you should first try transferring the entire card onto another one and if that doesnt fix anything its most likely some OS issue or “just” a messed up kernel where we probably wont be able to help.

And if you have a lot of time you can also read this thread

1 Like

That’s my guess, probably the OS. I read the “long thread” you send, before writting here, there I discarded the EEPROM corruption and my best guess is that Ubuntu Core updated by itself and something went wrong… I have 2 tasks now:

  1. Try to fix the ubuntu installation (probably I shoud go to Ubuntu Forums instead of Nextcloud ones)

  2. Learn how to use my Nextcloud data in a fresh installation (if that’s even posible as it’s encrypted).