I have two raspberry pi 3's that boot perfectly with raspian, but don't boot with ubuntu snappy core.

Here's what I did:

$ wget http://cdimage.ubuntu.com/ubuntu-snappy/16.04/current/ubuntu-core-16-pi3.img.xz
$ sha256sum ubuntu-core-16-pi3.img.xz 
 -> correct checksum
$ xz -d ubuntu-core-16-pi3.img.xz 
$ dd if=ubuntu-core-16-pi3.img of=/dev/sdb

Everything seemed to work at this point. When I tried to boot the pi with the sdcard here's what happened:

  • Red led turned on,
  • green led blinking,
  • Some messages on screen, that the pi is booting up (I could take a photo if you want to see them).

After that, the display just shows 4 raspberries. The green led is still blinking, usb mouse + keyboard have power, both lan status led's light up.

I would be thankful if anyone knows why the pi isn't booting or how to fix the problem.

I want to use the raspy to run a nextcloud cloudserver. (I think ubuntu is better than raspbian: Nextcloud is probably well testet on ubuntu, and security updates are afaik faster. Ubuntu mate worked, but the nextcloud snap package had some troubles with ubuntu mate)

2 Answers 2


You might try running sync after writing the image to the card. I couldn't get snappy to boot past a mount error until I did that.


Have a look at these instructions: https://developer.ubuntu.com/core/get-started/installation-medias.

  1. Download the image
  2. Plug in and unmount sd card
  3. Extract and install to sd card using xzcat <image file .xz> | sudo dd of=<drive address> bs=32M
  • I tried it. This does not fix the problem Jun 1, 2017 at 17:04
  • If you want to use ubuntu, you could try downloading xubuntu or lubuntu from here
    – user67191
    Jun 1, 2017 at 19:42
  • Kernel panic on 2 seperate devices with 2 seperate sd cards: not syncinc: VFS: Unable to mount root fson unknown-block (179,2) Lubuntu sha256sum: 12464124ddb2e9a11cd5d75066c788054773a558c5f4cdb182cd545e32de33b5 lubuntu-16.04.2-desktop-armhf-raspberry-pi.img.xz Jun 2, 2017 at 18:49
  • What type of sd card are you using?
    – user67191
    Jun 2, 2017 at 18:59
  • SanDisk Ultra 32GB micro sd HC I (10) Jun 3, 2017 at 12:37

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