The way the release upgrade process works is that it downloads a tarball from the next release we can see this in the meta-release file.
Dist: wily Name: Wily Werewolf Version: 15.10 Date: Thu, 22 October 2015 15:10:00 UTC Supported: 1 Description: This is the 15.10 release Release-File: http://archive.ubuntu.com/ubuntu/dists/wily/Release ReleaseNotes: http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/dist-upgrader-all/current/ReleaseAnnouncement ReleaseNotesHtml: http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/dist-upgrader-all/current/ReleaseAnnouncement.html UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/dist-upgrader-all/current/wily.tar.gz UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/dist-upgrader-all/current/wily.tar.gz.gpg So when the upgrade from Vivid to Wily is performed, we download the version of ubuntu-release-upgrader from wily. Subsequently, the fix only needs to appear in the release to which the upgrade is being performed. Having said that it's likely Vivid does need a fix for upgrades from Trusty, but this is currently untestable because of bug 1497688. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509305 Title: new kernel removed after upgrade if linux meta package not installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1509305/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
