A user reported that the GRUB menu was no longer being updated on a freshly deployed bionic system, and that this appears to be because /etc/kernel/postinst.d/zz-update-grub has disappeared.
# The version in the bionic-security pocket has it:
ubuntu@akis:~$ dpkg -c grub-efi-amd64_2.04-1ubuntu44.1.2_amd64.deb | grep zz
-rwxr-xr-x root/root 646 2021-03-03 11:42 ./etc/kernel/postinst.d/zz-update-grub
-rwxr-xr-x root/root 646 2021-03-03 11:42 ./etc/kernel/postrm.d/zz-update-grub
# The version in bionic-updates does not:
ubuntu@akis:~$ dpkg -c grub-efi-amd64_2.04-1ubuntu47.4_amd64.deb | grep zz
ubuntu@akis:~$
A user reported that the GRUB menu was no longer being updated on a freshly deployed bionic system, and that this appears to be because /etc/kernel/ postinst. d/zz-update- grub has disappeared.
# The version in the bionic-security pocket has it: amd64_2. 04-1ubuntu44. 1.2_amd64. deb | grep zz postinst. d/zz-update- grub postrm. d/zz-update- grub
ubuntu@akis:~$ dpkg -c grub-efi-
-rwxr-xr-x root/root 646 2021-03-03 11:42 ./etc/kernel/
-rwxr-xr-x root/root 646 2021-03-03 11:42 ./etc/kernel/
# The version in bionic-updates does not: amd64_2. 04-1ubuntu47. 4_amd64. deb | grep zz
ubuntu@akis:~$ dpkg -c grub-efi-
ubuntu@akis:~$