[Bug 1766217] Re: software updater presents an empty panel for updating

[Eric Siegerman]

Update to my previous comment:

When the updates for Linux 4.15.0-34-generic became available (but
before installing them), I retried some of these tests, and could no
longer reproduce the problem.

I re-added each of those problematic /var/lib/apt/extended_states
entries in turn; in each case, update-manager continued to display the
pending updates as it should do.

(I didn't think until too late to try re-adding all of the problematic
entries at once -- but then, that hadn't been necessary previously; in
my earlier round of testing, any one of them had sufficed to break
update-manager.)

Between installing the backlog of updates (as mentioned previously) and
then installing quite a few new packages (all user-land stuff -- build
dependencies for digikam), I have no idea what perturbed things enough
to make a previously solidly reproducible bug go back into hiding.
(With the possible exception of kde-pkg-tools, none of those many
installs and upgrades was to anything obviously relating to packaging
itself.)

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https://bugs.launchpad.net/bugs/1766217

Title:
  software updater presents an empty panel for updating

Status in update-manager package in Ubuntu:
  Confirmed

Bug description:
  1. software updater alerts me to a small update (<1Mb)
  2. click <install>
  3. software updater "does its thing"
  4. software update presents an empty panel and asks me to install or be reminded later
  5. click <install>
  repeat

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: update-manager 1:16.04.12
  ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16
  Uname: Linux 4.13.0-38-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.16
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Apr 23 20:55:24 2018
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'592'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'484'
   b'com.ubuntu.update-manager' b'launch-time' b'int64 1524479931'
  InstallationDate: Installed on 2017-12-13 (131 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  InterpreterPath: /usr/bin/python3.5
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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