[Bug 1652504] Re: Recent updates broke Ubuntu on Raspberry Pi 3

[Chris E]

*** This bug is a duplicate of bug 1652270 ***
    https://bugs.launchpad.net/bugs/1652270

As of upgrading between 16.04 and 18.04.2 the fdt_addr has changed
again, I was able to fix this via the following, first cat boot.scr on
the primary partition, there's a bunch of binary at the start of the
file followed by fdt_addr_r 0x03000000

Use that as the base value on config.txt:

device_tree_address=0x03000000

You do not need to set device_tree_end, this got the pi booting again.

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Title:
  Recent updates broke Ubuntu on Raspberry Pi 3

Status in flash-kernel package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hello,
  I've been running Raspberry Pi 3 with Ubuntu as described here https://wiki.ubuntu.com/ARM/RaspberryPi

  I've installed Ubuntu 16.04 and then upgraded to 16.10 and have been
  using this setup successfully since October up until last week.
  Unfortunately one of the latest kernel updates broke the installation
  and I found out the same happened for Ubuntu 16.04 LTS - and therefore
  I can no longer run up-to-date Ubuntu installation (with updated
  kernel) on my RPI.

  I am getting this error:
  Error image is not a fdt - must reset the board to recover

  I also tried this but it didn't help me:
  https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=168838

  Now I know running Ubuntu on RPI3 this way is not officially
  supported, but since Ubuntu Snappy is supported I thought someone here
  could know what is going on.

  Thank you very much.

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