[Bug 1914878] Re: At boot on Pi4 with 20.04.02 i get: Failed to load '//uboot/ubuntu/boot.sel'

[Dave Jones]

Apologies -- this one slipped under my radar. This isn't a valid error
message: it's a side-effect of the shared u-boot script used for Classic
and Core images.

The u-boot script for the pi (https://git.launchpad.net/ubuntu/+source
/flash-kernel/tree/bootscript/all/bootscr.rpi) attempts to load a u-boot
environment named "boot.sel". If it finds it, it knows it's operating on
Ubuntu Core and needs to adjust kernel, initrd, etc. paths to the
currently unpacked kernel snap (or to the newly unpacked one if it's
"trying" a new kernel). If it can't load this file (incidentally causing
"Failed to load '//uboot/ubuntu/boot.sel'" to appear on the console), it
knows it's on Classic and proceeds assuming everything's under the root
of the boot partition.

Anyway, it can be safely ignored: it's not an error, but normal for the
u-boot sequence on Classic up to Focal. From Groovy onwards, we're no
longer using u-boot in the sequence so you won't see any of this output
(unless you opt to use u-boot, which you still can for now).

** Changed in: u-boot (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1914878

Title:
  At boot on Pi4 with 20.04.02 i get: Failed to load
  '//uboot/ubuntu/boot.sel'

Status in u-boot package in Ubuntu:
  Invalid

Bug description:
  Installed Ubuntu 20.04.02 on a Pi4.
  On boot I get an error message: Failed to load '//uboot/ubuntu/boot.sel'.
  It boots from an sdcard.

  Ubuntu boots, only that I get that error message.
  On 20.04 and 20.04.01 did not have this issue.

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