[Bug 873468] Re: Update to latest Release failed for overloaded mirrors with no descriptive error message

[Barry Warsaw]

On Apr 17, 2012, at 03:37 PM, Steve Langasek wrote:

>We're never going to know with certainty what the cause of the failure
>is, but we should be providing better guidance to users about *probable*
>causes for the bug rather than leaving them with an opaque error
>message.  Mirror unavailability is a very likely cause for this error.
>
>How about:
>
>"After updating your packaging information, the essential package '%s' could not be located.  This may be because you have no official mirrors listed in your software sources, or because of excessive load on the mirror 
>you are using.  See /etc/apt/sources.list for the current list of configured software sources.
>
>In the case that the mirror is overloaded, you may want to try the
>upgrade again later.

See the attached branch, which I am testing now.

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https://bugs.launchpad.net/bugs/873468

Title:
  Update to latest Release failed for overloaded mirrors with no
  descriptive error message

Status in “update-manager” package in Ubuntu:
  In Progress
Status in “update-manager” source package in Precise:
  In Progress

Bug description:
  When auto updating to Oneiric, the update-manager crashed with the
  following message:

  "After your package information was updated the essential package 'ubuntu-minimal' can not be found anymore.
  This indicates a serious error, please report this bug using the command 'ubuntu-bug update-manager' in a terminal and include the files in /var/log/dist-upgrade/ in the bug report."

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: update-manager 1:0.150.3
  ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic i686
  NonfreeKernelModules: wl
  Architecture: i386
  CurrentDmesg.txt:
   [   29.414158] EXT4-fs (sda6): re-mounted. Opts: errors=remount-ro,commit=0
   [   35.168233] eth1: no IPv6 routers present
  Date: Thu Oct 13 18:23:58 2011
  GConfNonDefault:
   /apps/update-manager/check_new_release_ignore=
   /apps/update-manager/first_run=false
   /apps/update-manager/show_details=true
   /apps/update-manager/window_size=(784,600)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to natty on 2011-10-13 (0 days ago)

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