The work-around in https://bugs.launchpad.net/cloud- init/+bug/1309079/comments/5 did work as expected:
"sudo rm /boot/grub/menu.lst sudo update-grub-legacy-ec2 -y sudo apt-get dist-upgrade -qq --force-yes" However, as I understand, the prompt will still appear when doing later upgrades. -- 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/1323772 Title: Unattended "apt-get dist-upgrade -qq --force-yes" on 14.04 fails on grub configuration. Status in “apt” package in Ubuntu: Confirmed Bug description: Unattended "apt-get dist-upgrade -qq --force-yes" on 14.04 fails on Grub configuration. Reproduce by using "apt-get dist-upgrade -qq --force-yes" on the latest Ubuntu 14.04 image (https://cloud- images.ubuntu.com/locator/ec2/). It will not select grub defaults ("install the package maintainer's version") during upgrade. Setup will prompt the user for input. This is a new behavior (for me, since Ubuntu 6). It breaks automatic/scripted setup of servers. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1323772/+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