Had the same problem. Starting update manager as user or with sudo/gksudo didn't provide me with the upgrade button.
Adding
Dist: gutsy Name: Gutsy Gibbon Version: 7.10 Date: Thu, 18 Oct 2007 12:00:00 UTC Supported: 0 Description: This is the 7.10 release Release-File: http://archive.ubuntu.com/ubuntu/dists/gutsy/Release ReleaseNotes: http://archive.ubuntu.com/ubuntu/dists/gutsy/main/dist-upgrader-all/current/ReleaseAnnouncement UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/gutsy/main/dist-upgrader-all/current/gutsy.tar.gz UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/gutsy/main/dist-upgrader-all/current/gutsy.tar.gz.gpg
to the ~/.update-manager-core/meta-release as jared proposed did the trick.
Had the same problem.
Starting update manager as user or with sudo/gksudo didn't provide me with the upgrade button.
Adding
Dist: gutsy archive. ubuntu. com/ubuntu/ dists/gutsy/ Release archive. ubuntu. com/ubuntu/ dists/gutsy/ main/dist- upgrader- all/current/ ReleaseAnnounce ment archive. ubuntu. com/ubuntu/ dists/gutsy/ main/dist- upgrader- all/current/ gutsy.tar. gz ature: http:// archive. ubuntu. com/ubuntu/ dists/gutsy/ main/dist- upgrader- all/current/ gutsy.tar. gz.gpg
Name: Gutsy Gibbon
Version: 7.10
Date: Thu, 18 Oct 2007 12:00:00 UTC
Supported: 0
Description: This is the 7.10 release
Release-File: http://
ReleaseNotes: http://
UpgradeTool: http://
UpgradeToolSign
to the ~/.update- manager- core/meta- release as jared proposed did the trick.