[Bug 1794592] Re: Can't upgrade ubuntu 16.04 up to 18.04

[Eduardo dos Santos Barretto]

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/1794592

Title:
  Can't upgrade ubuntu 16.04 up to 18.04

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

Bug description:
  Вычисление изменений

  Не удалось рассчитать обновление системы

  Обнаружена неразрешимая проблема при расчёте обновления.

  Это может быть вызвано тем, что: 
  * Обновление до пре-релиза Ubuntu 
  * Использование текущей пре-релиз версии Ubuntu 
  * Неофициальное ПО, не предоставляемое Ubuntu 

  Если ничего из перечисленного не подходит, сообщите об этой ошибке, 
  выполнив команду «ubuntu-bug ubuntu-release-upgrader-core» в 
  терминале.

  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 x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Sep 26 23:40:34 2018
  InstallationDate: Installed on 2016-07-03 (815 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-09-26 (0 days ago)

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