[Bug 1793469] Re: The system can not be upgraded to version 18.04.1

[Brian Murray]

>From VarLogDistupgradeMainlog.txt:

2018-09-20 10:10:57,848 DEBUG Marking 'lubuntu-core' for upgrade
2018-09-20 10:10:58,097 DEBUG blacklist expr 'update-manager$' matches 'update-manager'
2018-09-20 10:10:58,097 DEBUG The package 'update-manager' is marked for removal but it's in the removal blacklist

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https://bugs.launchpad.net/bugs/1793469

Title:
  The system can not be upgraded to version 18.04.1

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

Bug description:
  Ubuntu 16.04.5 LTS (LXDE).


  When trying to update the system online from 16/04 to 18/04, the
  following error will be issued:

  An unresolved issue occurred during the upgrade.

  It can be caused by:
  * Update to the test version of Ubuntu
  * Operation on the trial version of Ubuntu
  * Unofficial software packages not provided by Ubuntu

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-135.161-generic 4.4.140
  Uname: Linux 4.4.0-135-generic i686
  NonfreeKernelModules: wl
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Thu Sep 20 10:11:20 2018
  InstallationDate: Installed on 2017-12-13 (280 days ago)
  InstallationMedia: Lubuntu 16.04.1 LTS "Xenial Xerus" - Release i386 (20160720)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-09-20 (0 days ago)
  VarLogDistupgradeTermlog:

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