[Bug 1799659] Re: upgrade to 18.04

[Sebastien Bacher]

Thank you for your bug report, from what version did you try to update
and using what tool?

The log has that error

  File "/tmp/ubuntu-release-upgrader-830bjhif/DistUpgrade/DistUpgradeViewText.py", line 51, in readline
    s = input()
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd0 in position 0: invalid continuation byte

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https://bugs.launchpad.net/bugs/1799659

Title:
  upgrade to 18.04

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

Bug description:
  which package creates a problem when updating my home server

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-138.164-generic 4.4.155
  Uname: Linux 4.4.0-138-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Oct 24 14:27:11 2018
  InstallationDate: Installed on 2017-01-15 (646 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-10-24 (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.

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