An upgrade from 'quantal' to 'precise' is not supported with this tool.

[Fabio Marconi]

Hello
Testcase:
-Start A Quantal session
-Start update manager
-Click on verify
-It will return that not all the updates can be installed proposing a Partial upgrade.
-Start the partial upgrade and it return that an 'upgrade from Quantal to Precise is not supported by this tool'
Thanks
Fabio
**Workaround: upgrade from terminal**

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.156.14.1
ProcVersionSignature: Ubuntu 3.4.0-1.3-generic 3.4.0-rc5
Uname: Linux 3.4.0-1-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Mon May 14 09:29:29 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1336980340
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 527
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Msirdian (arena7)]

i have same issue on my two 12.10 machines

[SlugiusRex (slugiusrex)]

I have experienced this as well, but I'm not sure that it should be called a bug because the Update Manager detects the condition and handles it with a dialog.

Using "sudo apt-get dist-upgrade" does the trick - but only partially because then you get to a point where some of the packages cannot be found or downloaded. This seems to also prevent the Ubuntu Software Center from loading properly. (see https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1003042)

W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/quantal/main/source/Sources 404 Not Found
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/quantal/main/binary-amd64/Packages 404 Not Found
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/quantal/main/binary-i386/Packages 404 Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.

[Fabio Marconi (fabiomarconi)]

no more reproducible
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