[Bug 1868294] [NEW] update-manager output is inscrutable when phased-updates across 2 separate source packages prevent installation (grub2 vs grub2-signed)

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Matthieu Clemenceau (mclemenceau):

There is a grub2+grub2-signed SRU in eoan-updates that is failing to
install here.  The publication all looks correct, and 'apt upgrade' or
'apt dist-upgrade' show no problems, but update-manager repeatedly
shows:

"Package dependencies cannot be resolved
This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time.
Transaction failed: Package dependencies cannot be resolved
 The following packages have unmet dependencies:

grub-efi-amd64-signed:"

Dependencies of the current eoan-updates version of the package are:

Depends: grub-efi-amd64-bin (= 2.04-1ubuntu12.2), grub-efi-amd64 | grub-
pc

I have grub-pc and grub-efi-amd64-bin installed, and they should both be
installable.

** Affects: update-manager (Ubuntu)
     Importance: Medium
         Status: New


** Tags: fr-305 id-5e75065441f12e4ca91ac521
-- 
update-manager output is inscrutable when phased-updates across 2 separate source packages prevent installation (grub2 vs grub2-signed)
https://bugs.launchpad.net/bugs/1868294
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