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

[Bill Wayson]

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

I just finished installing the released version of Ubuntu 12.04 amd64 on
a laptop/tablet, and I received the second message given by the reporter
after the first reboot and when attempting the first application of
updates using Update Manager:

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.

Other than this message, I am not sure I have the same problem as the
reporter does.  The Ubuntu Crash Reporter did say that my issue was a
duplicate of this one.

The installation was done using an external USB DVD/CD drive.

The suggestion in message #4 did not work for me even after multiple
refreshes of available updates and a reboot.  I believe it did not work
because the Update Manager -> Settings... -> Other Software window
showed two entries for Cdrom with Ubuntu 12.04 'Precise Pangolin'.  I
unchecked both lines and closed the dialog.  But, when I investigated
/etc/apt/sources.list, there were three lines for the cdrom, and only
two were commented out.  I commented out the third line, saved the file,
and then could proceed with Update Manager with no problem.

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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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