[Bug 964812] Re: release upgrade failed because of missing essential package ubuntu-minimal

[Steve Langasek]

I think the thing to do here is to improve the error message, to point
users towards the necessary information on how to get their unofficial
mirrors used during upgrade.  The actual disabling of unknown mirrors is
still quite deliberate, and guards against other more severe kinds of
upgrade failures.

Swen, could you attach the pre-upgrade version of /etc/apt/sources.list?

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https://bugs.launchpad.net/bugs/964812

Title:
  release upgrade failed because of missing essential package ubuntu-
  minimal

Status in “update-manager” package in Ubuntu:
  Triaged

Bug description:
  While trying to do a upgrade to precise on a remote server, the upgrade process failed with
  "After your package information was updated the essential package 
  'ubuntu-minimal' can not be found anymore so a bug reporting process 
  is being started. "

  Additionally the screen process was terminated before I was able to
  report the bug via the automatically launched apport command.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: update-manager (not installed)
  Uname: Linux 2.6.18-028stab094.3 x86_64
  Architecture: amd64
  Date: Sun Mar 25 23:31:26 2012
  ProcEnviron:
   LC_CTYPE=de_DE.UTF-8
   LC_COLLATE=de_DE.UTF-8
   LANG=de_DE.UTF-8
   LC_MESSAGES=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  VarLogDistupgradeAptlog:
   Log time: 2012-03-25 23:30:19.997312
   Log time: 2012-03-25 23:30:20.753861
   Log time: 2012-03-25 23:30:33.805762
   Log time: 2012-03-25 23:30:39.923369
  VarLogDistupgradeMainlog:

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