Entries for kernel versions appear in the grub boot menu and as such a reboot is required for the those kernel versions to disappear. I guess strictly speaking this isn't necessary and it looks like the control scripts for the Ubuntu kernel would need modifying to make this change.
The postinst file touches /usr/share/update-notifier/notify-reboot- required and maybe one of the rm scripts calls it. ** Package changed: apt (Ubuntu) => linux (Ubuntu) ** Summary changed: - apt-get autoremove should not require a restart afterward + removing kernels should not require a restart afterward -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1458204 Title: removing kernels should not require a restart afterward Status in linux package in Ubuntu: Incomplete Bug description: 1. Perform a kernel upgrade normally via "apt-get dist-upgrade". 2. Reboot. 3. Run "apt-get autoremove" to delete the old kernel packages. 4. "System Notification Helper" now reports that the computer requires a reboot. The "autoremove" operation shouldn't require a reboot, logically speaking, because it's just removing files that are unused by the OS. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: apt 1.0.1ubuntu2.7 ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19 Uname: Linux 3.13.0-53-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 CurrentDesktop: KDE Date: Sat May 23 12:47:15 2015 InstallationDate: Installed on 2013-08-31 (629 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) SourcePackage: apt UpgradeStatus: Upgraded to trusty on 2014-04-26 (391 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1458204/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp