[Bug 1677178] Re: update-manager crashed with aptdaemon.errors.AptDaemonError in _convert_dbus_exception(): org.debian.apt: Could not cancel transaction

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*** This bug is a duplicate of bug 1209219 ***
    https://bugs.launchpad.net/bugs/1209219

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #1209219, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** Tags removed: need-duplicate-check

** Changed in: update-manager (Ubuntu)
   Importance: Undecided => Medium

** Attachment removed: "ProcMaps.txt"
   https://bugs.launchpad.net/bugs/1677178/+attachment/4849569/+files/ProcMaps.txt

** Attachment removed: "ProcStatus.txt"
   https://bugs.launchpad.net/bugs/1677178/+attachment/4849570/+files/ProcStatus.txt

** This bug has been marked a duplicate of bug 1209219
   update-manager crashed with aptdaemon.errors.AptDaemonError in _convert_dbus_exception(): org.debian.apt: Could not cancel transaction

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1677178

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

Status in update-manager package in Ubuntu:
  New

Bug description:
  I don't know if this is really a crash in update-manager, or a crash
  provoked by a very strange freeze I'm getting and which I haven't been
  able to diagnose yet. This update-manager crash happened in the
  following sequence: 1) I was using Firefox and it froze, in such a way
  that it wouldn't reopen, it would tell me that it was running. 2) "ps
  -ef" to check if there is any firefox process does not complete, it
  shows me some lines and stops, and I can't kill it with control-c, 3)
  I started update-manager, told it to upgrade, and it hang at
  installing "lvm". 4) I had other applications in my desktop not
  responding. I had to reboot. This is the second time I see this
  general freeze. It is not a complete freeze, just as if some
  applications are running but not responding, I can't describe it
  better.

  ProblemType: Crash
  DistroRelease: Ubuntu 17.04
  Package: update-manager 1:17.04.3
  ProcVersionSignature: Ubuntu 4.10.0-14.16-generic 4.10.3
  Uname: Linux 4.10.0-14-generic x86_64
  ApportVersion: 2.20.4-0ubuntu2
  Aptdaemon:
   
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: Unity:Unity7
  Date: Wed Mar 29 11:25:11 2017
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'335'
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'window-width' b'645'
   b'com.ubuntu.update-manager' b'launch-time' b'int64 1490778182'
  InstallationDate: Installed on 2015-10-17 (528 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  InterpreterPath: /usr/bin/python3.5
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/update-manager
  PythonArgs: ['/usr/bin/update-manager']
  SourcePackage: update-manager
  Title: update-manager crashed with aptdaemon.errors.AptDaemonError in _convert_dbus_exception(): org.debian.apt: Could not cancel transaction
  UpgradeStatus: Upgraded to zesty on 2017-03-02 (26 days ago)
  UserGroups: adm cdrom dip lpadmin lxd mail plugdev sambashare sudo vboxusers

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