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I'm trying to use the official ubuntu-18.04-preinstalled-server-armhf+raspi2.img.xz image on my Raspberry PI 3B+. I've followed these instructions: https://wiki.ubuntu.com/ARM/RaspberryPi#Booting_the_official_Pi_2_image_on_the_Pi_3B.2F3B.2B- to convert the image for use on my Pi 3B+.

I can get the machine to boot, but it gets stuck in the boot sequence. The first error is that it fails to load kernel modules. After continuing on, the Pi gets stuck during cloud-init and fails to start the networking service.

I've tried manually copying the kernel modules using these commands in the documentation:

sudo cp /boot/vmlinuz /boot/firmware/
sudo cp /boot/initrd.img /boot/firmware/

Photo of Error

But still, no luck. Any ideas?

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2 Answers 2

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Failed to load kernel modules is nothing to worry about.

Have you plugged your pi into working Ethernet? From memory this is needed on first boot or it will get stuck. Have you copied the dtb file for the 3B+?

Don't copy those kernel files, you only need to do this if you don't update the flash-kernel database. And you only need to worry about that when you run a package update.

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  • You were right, when plugging in Ethernet I made it to the login screen. The username ubuntu and password ubuntu resulted in a failed login. On my second try at making a new image, I get a similar networking error. (picture on original post). Thanks!
    – Dynamic
    Jun 11, 2018 at 13:27
  • Strange you can't log in. Don't know the answer for that!
    – Adam Smith
    Jun 11, 2018 at 15:49
  • At the top of the photo it looks like the end of some kind of kernel crash/error?
    – Adam Smith
    Jun 11, 2018 at 15:50
  • Adam, here it is: i.imgur.com/05x7HlO.jpg
    – Dynamic
    Jun 11, 2018 at 16:00
  • Lan78xx is the kernel module for your Ethernet. That looks like it is crashing so you don't have Ethernet, so you are getting stuck again. Maybe try writing the image for a third time?
    – Adam Smith
    Jun 11, 2018 at 18:00
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I had the same problem. Solved it by deleting /etc/netplan/50-cloud-init.yaml.

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  • My /etc/netplan directory was empty on the cloudimg-rootfs partition.
    – Dynamic
    Nov 24, 2018 at 17:05

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