[Bug 1648506] Re: cannot upgrade from 14.04 to 16.04

[Seth Arnold]

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.

** Information type changed from Private Security to Public

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https://bugs.launchpad.net/bugs/1648506

Title:
  cannot upgrade from  14.04  to  16.04

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Could not determine the upgrade

  An unresolvable problem occurred while calculating the upgrade.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

  lsb_release -rd'  ubuntu   14.04  LTS

  apt-cache policy pkgname

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.9
  ProcVersionSignature: Ubuntu 3.13.0-105.152-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-105-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  CurrentDmesg.txt:
   [   41.264543] init: plymouth-stop pre-start process (1617) terminated with status 1
   [   46.800496] audit_printk_skb: 153 callbacks suppressed
   [   46.800499] type=1400 audit(1481204958.669:72): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=1744 comm="apparmor_parser"
   [   46.800504] type=1400 audit(1481204958.669:73): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=1744 comm="apparmor_parser"
   [   46.800905] type=1400 audit(1481204958.673:74): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=1744 comm="apparmor_parser"
  Date: Thu Dec  8 14:25:23 2016
  InstallationDate: Installed on 2013-06-11 (1276 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-12-08 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update.manager.release.upgrades: 2016-12-08T14:21:01.383322

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