[Bug 1691716] [NEW] High CPU after update-manager is finished, dialog still open

[WoodyEckelzone]

Public bug reported:

After update-manager is finished updating the machine, a dialog is open
`The software on this computer is up to date`

Until I manually close the dialog, CPU usage is high (causing fan
activity on my laptop), on an idle laptop.

 1073 root      20   0  327616  52508  21344 S  28,5  1,3  24:13.48 Xorg                                       
 7232 user       20   0 1144896  85272  36848 S  25,2  2,2  19:31.46 compiz                                     
19863 user       30  10  793744 148616  78720 R  18,5  3,8  17:35.43 update-manager 

I do wonder why the 3 processes take so much CPU usage, a simple dialog
waiting for user input could do with less, I suppose.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: update-manager 1:16.04.6
ProcVersionSignature: Ubuntu 4.8.0-52.55~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-52-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 18 11:45:39 2017
GsettingsChanges:
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'691'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'754'
 b'com.ubuntu.update-manager' b'launch-time' b'int64 1495095095'
InstallationDate: Installed on 2014-04-18 (1125 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: Upgraded to xenial on 2016-04-22 (390 days ago)

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


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1691716

Title:
  High CPU after update-manager is finished, dialog still open

Status in update-manager package in Ubuntu:
  New

Bug description:
  After update-manager is finished updating the machine, a dialog is
  open `The software on this computer is up to date`

  Until I manually close the dialog, CPU usage is high (causing fan
  activity on my laptop), on an idle laptop.

   1073 root      20   0  327616  52508  21344 S  28,5  1,3  24:13.48 Xorg                                       
   7232 user       20   0 1144896  85272  36848 S  25,2  2,2  19:31.46 compiz                                     
  19863 user       30  10  793744 148616  78720 R  18,5  3,8  17:35.43 update-manager 

  I do wonder why the 3 processes take so much CPU usage, a simple
  dialog waiting for user input could do with less, I suppose.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: update-manager 1:16.04.6
  ProcVersionSignature: Ubuntu 4.8.0-52.55~16.04.1-generic 4.8.17
  Uname: Linux 4.8.0-52-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu May 18 11:45:39 2017
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'691'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'754'
   b'com.ubuntu.update-manager' b'launch-time' b'int64 1495095095'
  InstallationDate: Installed on 2014-04-18 (1125 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to xenial on 2016-04-22 (390 days ago)

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