[Bug 1243416] [NEW] 12.04: nonsense "Requires installation of untrusted packages" error message. No clue given what to do. Can't install any update

matteo sisti sette 1243416 at bugs.launchpad.net
Tue Oct 22 21:18:53 UTC 2013 

Public bug reported:

Fresh install of Ubuntu 12.04 LTS.
First time I boot it.
Update Manager automatically pops up and shows there are 131 updates available.
I click "Install updates".

Then I am presented with this ridiculous error message: "Requires installation of untrusted packages". So what?
The only available option is "Close". Then I'm back at Update Manager where the 131 available updates are listed.

What is that supposed to mean? What am I supposed to do?
If something is wrong with those updates, then why is the system proposing them in the first place?
Some options should be given so as to solve the supposed issue.
It is impossible to install the updates, because if you click on "Install updates" again, it will give the same error again.

If you unfold the "Details" triangle, a (pretty long) list of packages is shown. It is not clear whether these are the packages whose installation would require the installation of untrusted stuff, or if this is the untrusted stuff that is required, in which case we don't know what updates are requiring this. 
It's hard to figure out which updates one may uncheck in order to bypass this stall situation. Also, how is that supposed to solve the problem?

Some information that makes sense should be given to the user, and
options should be given such as "install untrusted packages" or "skip
installation of packages that require untrusted packages" (in which
case, in turn, there should be two options: ask me later, or never ask
to install these updates again).

Do you realise how nonsense the situation is?
The system is telling me: "these updates that I (the system) have decided on my own initiative to propose you, without you ever asking, cannot be installed because it would require to install something else that I don't want to install."

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.11
ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic i686
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: i386
CurrentDmesg.txt:
 [   57.419691] audit_printk_skb: 24 callbacks suppressed
 [   57.419700] type=1400 audit(1382475490.479:28): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=1581 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Date: Tue Oct 22 23:06:10 2013
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1382475562
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 (20130820.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.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: apport-bug i386 precise running-unity

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https://bugs.launchpad.net/bugs/1243416

Title:
  12.04: nonsense "Requires installation of untrusted packages" error
  message. No clue given what to do. Can't install any update

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

Bug description:
  Fresh install of Ubuntu 12.04 LTS.
  First time I boot it.
  Update Manager automatically pops up and shows there are 131 updates available.
  I click "Install updates".

  Then I am presented with this ridiculous error message: "Requires installation of untrusted packages". So what?
  The only available option is "Close". Then I'm back at Update Manager where the 131 available updates are listed.

  What is that supposed to mean? What am I supposed to do?
  If something is wrong with those updates, then why is the system proposing them in the first place?
  Some options should be given so as to solve the supposed issue.
  It is impossible to install the updates, because if you click on "Install updates" again, it will give the same error again.

  If you unfold the "Details" triangle, a (pretty long) list of packages is shown. It is not clear whether these are the packages whose installation would require the installation of untrusted stuff, or if this is the untrusted stuff that is required, in which case we don't know what updates are requiring this. 
  It's hard to figure out which updates one may uncheck in order to bypass this stall situation. Also, how is that supposed to solve the problem?

  Some information that makes sense should be given to the user, and
  options should be given such as "install untrusted packages" or "skip
  installation of packages that require untrusted packages" (in which
  case, in turn, there should be two options: ask me later, or never ask
  to install these updates again).

  Do you realise how nonsense the situation is?
  The system is telling me: "these updates that I (the system) have decided on my own initiative to propose you, without you ever asking, cannot be installed because it would require to install something else that I don't want to install."

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.11
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
  Uname: Linux 3.8.0-29-generic i686
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
  CurrentDmesg.txt:
   [   57.419691] audit_printk_skb: 24 callbacks suppressed
   [   57.419700] type=1400 audit(1382475490.479:28): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=1581 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
  Date: Tue Oct 22 23:06:10 2013
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1382475562
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 (20130820.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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