I've had the very same issue for the first time with Kubuntu 16.04 LTS (that's not a typo, the issue is with both versions).
Roger Wolf explained on AskUbuntu[1] that's it's because the output of whiptail is being redirected to /dev/null. And indeed, by answering the questions I could read thanks to htop, I got out of the hang flawlessly. I've done countless upgrades on the same machine in the past, and I've been asked the same question serveral times before without it being redirected to /dev/null, so I assume the issue is new for the 16.04. Maybe some recent backport of the 18.04 bug? [1] https://askubuntu.com/questions/1052000/all-kernel-upgrades-hang-on- update-secureboot-policy-enroll-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799279 Title: kernel update hangs inside update-secureboot-policy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1799279/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
