[Bug 1786921] [NEW] Update from 16.04.5 to 18.04.1 failed

[José Manuel Ferrer]

Public bug reported:

The detailed error message is: E:Error, pkgProblemResolver::Resolve
generated breaks, this may be caused by held packages.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
Uname: Linux 4.4.0-131-generic i686
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: LXDE
Date: Tue Aug 14 11:55:24 2018
InstallationDate: Installed on 2015-08-05 (1104 days ago)
InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-14 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 third-party-packages xenial

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https://bugs.launchpad.net/bugs/1786921

Title:
  Update from 16.04.5 to 18.04.1 failed

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

Bug description:
  The detailed error message is: E:Error, pkgProblemResolver::Resolve
  generated breaks, this may be caused by held packages.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic i686
  NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Tue Aug 14 11:55:24 2018
  InstallationDate: Installed on 2015-08-05 (1104 days ago)
  InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-14 (0 days ago)
  VarLogDistupgradeTermlog:

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