[Bug 1469379] [NEW] Software updater cannot be opened from launcher after resuming from standby

[Jeroen]

Public bug reported:

During normal operation the software updater might find new software. In
that case the Software Updater icon becomes available in the launcher.
After clicking the icon the Software Updater dialogue opens with an
overview of new software.

However, this process doesn't work correct after a computer resumes from standby. If the Software Updater icon is available *directly* after resuming from standby, clicking on the icon does open the Software Updater dialogue, in fact it does nothing.
This issue is observed for more than a year now on Ubuntu 14.04 on *multiple* computers. 

There are two workarounds to fix the situation, first is to reboot, the
second is to right-click on the icon and quit Software Updater and then
restart it manually from the Dash. However a non-technical user will not
have a clue how to fix this.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.13
ProcVersionSignature: Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20
Uname: Linux 3.13.0-55-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Jun 27 11:55:40 2015
EcryptfsInUse: Yes
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'319'
 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'1435398928'
InstallationDate: Installed on 2014-04-18 (434 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
InterpreterPath: /usr/bin/python3.4
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug trusty

** Attachment removed: "CurrentDmesg.txt.txt"
   https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1469379/+attachment/4421205/+files/CurrentDmesg.txt.txt

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https://bugs.launchpad.net/bugs/1469379

Title:
  Software updater cannot be opened from launcher after resuming from
  standby

Status in update-manager package in Ubuntu:
  New

Bug description:
  During normal operation the software updater might find new software.
  In that case the Software Updater icon becomes available in the
  launcher. After clicking the icon the Software Updater dialogue opens
  with an overview of new software.

  However, this process doesn't work correct after a computer resumes from standby. If the Software Updater icon is available *directly* after resuming from standby, clicking on the icon does open the Software Updater dialogue, in fact it does nothing.
  This issue is observed for more than a year now on Ubuntu 14.04 on *multiple* computers. 

  There are two workarounds to fix the situation, first is to reboot,
  the second is to right-click on the icon and quit Software Updater and
  then restart it manually from the Dash. However a non-technical user
  will not have a clue how to fix this.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: update-manager 1:0.196.13
  ProcVersionSignature: Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20
  Uname: Linux 3.13.0-55-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Jun 27 11:55:40 2015
  EcryptfsInUse: Yes
  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'319'
   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'1435398928'
  InstallationDate: Installed on 2014-04-18 (434 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  InterpreterPath: /usr/bin/python3.4
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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