[Bug 1788617] Re: sudo do-release-upgrade failed

[tecknomage]

Today a pop-up dialog to Upgrade to 18.04 opened.

Tried it and it seemed to run OK, BUT one package could not be installed
(couldn't find?!)

But this method of upgrading does not offer to roll-back if there were
errors.

Result, on reboot my laptop crashed.

Recovered image backup, back to normal.

How could Conical have a required package missing?
Why no method to roll-back an Upgrade?

Sorry I didn't write down the name of the missing package. Saved the
name to a text file, which is not available.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1788617

Title:
  sudo do-release-upgrade failed

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

Bug description:
  Ubuntu 18.4.1 Upgrade Fail

  sudo do-release-upgrade

  Termanal:
  Could not calculate the upgrade 

  An unresolvable problem occurred while calculating the upgrade.

  This can be caused by: 
  * Upgrading to a pre-release version of Ubuntu 
  * Running the current pre-release version of Ubuntu 
  * Unofficial software packages not provided by Ubuntu 

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. 

  
  Restoring original system state

  ____________________________

  Used the "ubuntu-bug ubuntu-release-upgrader-core" as instructed.

  What now?

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-133.159-generic 4.4.134
  Uname: Linux 4.4.0-133-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Aug 23 06:48:03 2018
  InstallationDate: Installed on 2014-01-24 (1671 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-23 (0 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1788617/+subscriptions