[Bug 1248320] Re: selecting "show differences side by side" on GRUB update prompt does not work

[Tamás Bitai]

Had the same issue in 18.04.1. From /var/log/dpkg.log this is what seems
to be the relevant part:

2018-11-26 10:10:35 status half-configured grub-efi-amd64:amd64 2.02-2ubuntu8.9
2018-11-26 11:14:03 status installed grub-efi-amd64:amd64 2.02-2ubuntu8.9

I was doing something else when prompted about the conflict resolution,
then (after about an hour, apparently) I clicked on "view diff" or
similar, but nothing happened, the update just went forward.

Difference from the OP is that I don't remember having changed my GRUB
config, so it's also a question why I was prompted in the first place.

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https://bugs.launchpad.net/bugs/1248320

Title:
  selecting "show differences side by side" on GRUB update prompt does
  not work

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  I've just made an automatic software update. There was a prompt about
  what to do with my default grub, because I had modified it a bit.
  There was a default option like "install the maintainers version" or
  similar.

  I wanted to see the differences, so I had chosen "show differences
  side by side" or so. I clicked next. But to my surprise, nothing
  happened! No new window, no anything. Update successful. What?

  So I have a look into /etc/default/grub - and it's very same as before
  the update.

  Where is the problem? :(

  PS: Sorry if I've mis-chosen the package

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.2
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Nov  5 22:18:42 2013
  InstallationDate: Installed on 2013-10-26 (10 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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