[Bug 990301] Re: update-manager crashed with AptDaemonError in _convert_dbus_exception(): org.debian.apt: Could not cancel transaction

[Robert Roth]

*** This bug is a duplicate of bug 628104 ***
    https://bugs.launchpad.net/bugs/628104

Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug. I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

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https://bugs.launchpad.net/bugs/990301

Title:
  update-manager crashed with AptDaemonError in
  _convert_dbus_exception(): org.debian.apt: Could not cancel
  transaction

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

Bug description:
  Current system:

  Description:	Ubuntu precise (development branch)
  Release:	12.04

  I am trying to update from update manager and it fails with this
  errors:

  
  update-manager:
    Installed: 1:0.156.11
    Candidate: 1:0.156.14
    Version table:
       1:0.156.14 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
   *** 1:0.156.11 0
          100 /var/lib/dpkg/status
  0

  Other message popup window:

  CD/DVD 'Ubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)'
  is required

  Please insert the above CD/DVD into the drive '/cdrom/' to install
  software packages from it.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.11
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
  Uname: Linux 3.2.0-23-generic-pae i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu3
  Architecture: i386
  CrashCounter: 1
  Date: Fri Apr 27 21:58:00 2012
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1335589053
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 610
   com.ubuntu.update-manager window-width 600
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/update-manager
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  PythonArgs: ['/usr/bin/update-manager']
  SourcePackage: update-manager
  Title: update-manager crashed with AptDaemonError in _convert_dbus_exception(): org.debian.apt: Could not cancel transaction
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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