[Bug 1857907] Re: trying to upgrade 16.04 lts to 18.04 with do-release-upgrade

[Brian Murray]

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1857907

Title:
  trying to upgrade 16.04 lts to 18.04 with do-release-upgrade

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released

Bug description:
  This notebook machine is not running X, it was broken at some point of
  time in the past with some usual nvidia mess, but otherwise it is
  healthy, package manager seems to be happy and up to date with 16.04,
  so an upgrade should not crash like this.

  it proceeds with fetching boinc.tar.gz then makes sure system is up to
  date then downloads the boinc package lists and tries to calculate the
  changes twice, but reports an unresolvable problem while calculating.

  /var/log/dist-upgrade/main.log says

  ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve
  generated breaks, this may be caused by held packages.'

  Well, that could be the case, but it would be nice to tell more than
  that. There is more info, much more in apt. log in the same place, but
  it is a pitty that the package manager is not able to resolve this on
  its own... Thanks.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.29
  ProcVersionSignature: Ubuntu 4.4.0-170.199-generic 4.4.200
  Uname: Linux 4.4.0-170-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.21
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon Dec 30 17:17:39 2019
  InstallationDate: Installed on 2016-01-01 (1458 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-12-30 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz:
   Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie
   Error executing command as another user: Not authorized
   
   This incident has been reported.
  mtime.conffile..etc.update-manager.release-upgrades: 2017-02-14T08:19:42.712155

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