When upgrading the kernel on a recent Bionic minimal image, the user is prompted to resolve a conflict in the file /boot/grub/menu.lst.
The minimal images do not have dialog/whiptail installed, so debconf falls back to using the readline frontend.
The user sees the prompt: "What would you like to do about menu.lst?" but is not presented with the list of options to choose from.
If a valid option is typed in, debconf will continue processing correctly and the list of options appears on the screen. See also https://pastebin.ubuntu.com/p/8xvSn88SKG/
AFFECTED RELEASE:
Bionic
PACKAGE VERSION:
debconf - 1.5.66
DESCRIPTION:
When upgrading the kernel on a recent Bionic minimal image, the user is prompted to resolve a conflict in the file /boot/grub/ menu.lst.
The minimal images do not have dialog/whiptail installed, so debconf falls back to using the readline frontend.
The user sees the prompt: "What would you like to do about menu.lst?" but is not presented with the list of options to choose from.
If a valid option is typed in, debconf will continue processing correctly and the list of options appears on the screen. See also https:/ /pastebin. ubuntu. com/p/8xvSn88SK G/
STEPS TO REPRODUCE:
Launch the minimal Bionic image with serial 20190212 http:// cloud-images. ubuntu. com/minimal/ releases/ bionic/ release- 20190212/ ubuntu- 18.04-minimal- cloudimg- amd64.img
for example via multipass and run `apt-get update` and `apt-get dist-upgrade`.