[Bug 1463900] Re: can't upgrade from 14.10 to 15.04

[SlyK]

Wee found the solution for my current problem is xserver-*. I think
Ubuntu must advice people to analyse apt.log or even display error
messages from there and say what commands may help.

For me, the solve procedure was:

1. Open latest apt.log from /var/log/dist-upgrade
2. Find lines with problems, starting with "Broken..."
3. Remove that packages using "apt-get remove <names>"
4. Finally run "do-release-upgrade"

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https://bugs.launchpad.net/bugs/1463900

Title:
  can't upgrade from 14.10 to 15.04

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

Bug description:
  I had Ubuntu 14.04 with core from 14.10. Then wanted ro upgrade to
  15.04. Seems like I have to do this only by going to 14.10 version
  before 15.04. But after successfull upgrade to 14.10 it seems like I
  can't upgrade further.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-release-upgrader-core 1:14.10.10
  ProcVersionSignature: Ubuntu 3.16.0-38.52-generic 3.16.7-ckt10
  Uname: Linux 3.16.0-38-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.7-0ubuntu8.5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Jun 10 19:09:37 2015
  InstallationDate: Installed on 2014-11-20 (201 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to utopic on 2015-06-10 (0 days ago)

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