WARNING: Failed to read mirror file

[Bartolus89]

Ubuntu 10.04

1. Run update-manager -d
2. WARNING: Failed to read mirror file
3. Ubtuntu 12.04 available
4. Could not determine the upgrade

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.12.1
ProcVersionSignature: Ubuntu 2.6.35-6.9-generic 2.6.35-rc3
Uname: Linux 2.6.35-6-generic i686
Architecture: i386
Date: Sun Mar 18 13:58:57 2012
GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=
 /apps/update-manager/first_run=false
 /apps/update-manager/show_versions=false
 /apps/update-manager/window_size=(600,519)
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
VarLogDistupgradeTermlog:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Helge Stenström (h-stenstrom)]

The "WARNING: Failed to read mirror file" seemed to stop me from using "upgrade-manager -d", but on the other hand "do-release-upgrade -d" seems to work. I still get the warning, though, and I'm running the upgrade right now. With upgrade-manager, it never started to download files after the warning message came.

I'm trying to upgrade from 10.04 LTS to 12.04 LTS. The 12.04.1 release was released today.

[dino99 (9d9)]

This version is no more supported