[Bug 1830646] Re: can't update from 18.04 to 18.10

[Tom Reynolds]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. However, you seem to be using packages from PPAs. PPAs
are unsupported by Ubuntu, and packages (and package versions) installed
from those need to be removed before upgrading to a new Ubuntu release.

This PPA, which you seem to use,
https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers , states:

=== Upgrading to a newer Ubuntu ===
It is *strongly* suggested to remove all packages from this PPA before updating to a newer Ubuntu release. See the section "Revert to original drivers" later on.
Then, after the upgrade, you can add again this PPA.

I am setting this bug report as incomplete - please change the sattus
back to "new" should this issue continue to exist after all packages
(and package versions) installed from PPAs have been removed.

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

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https://bugs.launchpad.net/bugs/1830646

Title:
  can't update from 18.04 to 18.10

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

Bug description:
  "An unresolvable problem occurred while calculating the upgrade"

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.33
  Uname: Linux 4.15.18-041518-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon May 27 22:41:34 2019
  InstallationDate: Installed on 2018-11-01 (207 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no username)
   XDG_RUNTIME_DIR=<set>
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2019-05-27 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2019-05-27T21:08:40.665991

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