[Bug 1316436] Re: update manager gives untrusted packages for installation - can't rid from update manager - won't install

[J. Paul Purdell]

To: Chamal De Silva:  Thank you for your reply.  Your "workaround" was successful except that I had to add one additional step.  After closing the Synaptic Package Manager, the update manager would not open and was still showing (at that point) 101 updates.  So, I tried rebooting the computer.  After the reboot, the update manager did not show any updates. I selected the cog image in the upper right corner of the screen and "up to date" regarding updates was displayed.  I checked it again now (as I write this) and the information reads "updates available".  I will select it to see what happens.   Oh no!  It now shows the 101 updates to be installed again.   I will try it.  Maybe the additional 9 updates have some type of fix.  
No, there was no fix.  I still receive the same error message "requires the installation of untrusted packages"  I tried installing but was not successful.  I wonder if it would help to reinstall Ubuntu?

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https://bugs.launchpad.net/bugs/1316436

Title:
  update manager gives untrusted packages for installation - can't rid
  from update manager - won't install

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  The update manager reports there are 91 updates to install.  After
  selecting the install button an error message appears which reads
  "Requires installation of untrusted packages"  and then it states the
  packages are not from an "authenticated source".  Why does the update
  manager have these packages available for installation if they are
  "untrusted" and not from an "authenticated source"?  In the settings I
  have selected to download and install only authenticated packages.
  These untrusted installation packages keep appearing - won't go away.
  If they are untrusted, I don't want to install them.  How do I get rid
  of them? Why were they offered in the first place?  This must be a
  bug.   Some of the installation packages are security updates.   Thank
  you.

  Ubuntu 12.04 LTS

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.13
  ProcVersionSignature: Ubuntu 3.11.0-20.34~precise1-generic 3.11.10.6
  Uname: Linux 3.11.0-20-generic i686
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: i386
  CurrentDmesg.txt:
   [  121.973498] audit_printk_skb: 129 callbacks suppressed
   [  121.973507] type=1400 audit(1399356011.937:70): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=2408 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
  Date: Tue May  6 01:42:08 2014
  DpkgHistoryLog.txt:
   
  DpkgTerminalLog.txt:
   
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1399356306
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 500
   com.ubuntu.update-manager window-width 769
  InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: No upgrade log present (probably fresh install)

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