[Bug 1648398] [NEW] Clicking "Show Updates" does not update manually as described

[Phill]

Public bug reported:

Update manager applet shows a warning message as follows:

"The update information is outdated. This may be caused by network
problems or by a repository that is no longer available. Please update
manually by selecting 'Show updates' from the indicator menu, and
watching for any failing repositories."

However, clicking 'Show updates' does not reload anything.

Running 'Software Updater' separately downloads the updated repositories
by does not remove the notification.

Installing the updates using 'Software Updater' removes the notification
roughly at the point that downloads are completed, but this could just
be a timing coincidence.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: update-manager 1:16.04.4
ProcVersionSignature: Ubuntu 4.4.0-51.72-generic 4.4.30
Uname: Linux 4.4.0-51-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Aptdaemon:
 
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Dec  8 10:26:56 2016
DpkgHistoryLog.txt:
 Start-Date: 2016-12-01  10:14:14
 Commandline: aptdaemon role='role-commit-packages' sender=':1.88'
 Install: linux-headers-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic), linux-headers-4.4.0-51:amd64 (4.4.0-51.72, automatic), linux-image-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic), linux-image-extra-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic)
 Upgrade: linux-headers-generic:amd64 (4.4.0.47.50, 4.4.0.51.54), linux-libc-dev:amd64 (4.4.0-47.68, 4.4.0-51.72), linux-image-generic:amd64 (4.4.0.47.50, 4.4.0.51.54), linux-generic:amd64 (4.4.0.47.50, 4.4.0.51.54)
 End-Date: 2016-12-01  10:15:34
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'705'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'753'
 b'com.ubuntu.update-manager' b'launch-time' b'1481192740'
InstallationDate: Installed on 2016-06-03 (187 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
InterpreterPath: /usr/bin/python3.5
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1648398

Title:
  Clicking "Show Updates" does not update manually as described

Status in update-manager package in Ubuntu:
  New

Bug description:
  Update manager applet shows a warning message as follows:

  "The update information is outdated. This may be caused by network
  problems or by a repository that is no longer available. Please update
  manually by selecting 'Show updates' from the indicator menu, and
  watching for any failing repositories."

  However, clicking 'Show updates' does not reload anything.

  Running 'Software Updater' separately downloads the updated
  repositories by does not remove the notification.

  Installing the updates using 'Software Updater' removes the
  notification roughly at the point that downloads are completed, but
  this could just be a timing coincidence.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: update-manager 1:16.04.4
  ProcVersionSignature: Ubuntu 4.4.0-51.72-generic 4.4.30
  Uname: Linux 4.4.0-51-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Aptdaemon:
   
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Dec  8 10:26:56 2016
  DpkgHistoryLog.txt:
   Start-Date: 2016-12-01  10:14:14
   Commandline: aptdaemon role='role-commit-packages' sender=':1.88'
   Install: linux-headers-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic), linux-headers-4.4.0-51:amd64 (4.4.0-51.72, automatic), linux-image-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic), linux-image-extra-4.4.0-51-generic:amd64 (4.4.0-51.72, automatic)
   Upgrade: linux-headers-generic:amd64 (4.4.0.47.50, 4.4.0.51.54), linux-libc-dev:amd64 (4.4.0-47.68, 4.4.0-51.72), linux-image-generic:amd64 (4.4.0.47.50, 4.4.0.51.54), linux-generic:amd64 (4.4.0.47.50, 4.4.0.51.54)
   End-Date: 2016-12-01  10:15:34
  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'705'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'753'
   b'com.ubuntu.update-manager' b'launch-time' b'1481192740'
  InstallationDate: Installed on 2016-06-03 (187 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  InterpreterPath: /usr/bin/python3.5
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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