Bionic: server install from ubuntu-18.04.5-live-server-amd64.iso.
Security updates applied by subiquity, including grub-efi-amd64
2.04-1ubuntu44. /etc/kernel/post{inst,rm}.d/zz-update-grub are not
present (to my surprise - then I worked out this was because grub wasn't
installed in the source squashfs, so this was a new install of the
package from -security rather than an upgrade).
grub-pc is not installed.
Enabled -proposed in sources.list.
sudo apt install grub-efi-amd64 grub-efi-amd64-bin grub-efi-amd64-signed
/etc/kernel/post{inst,rm}.d/zz-update-grub now exist as expected
sudo apt dist-upgrade to install 4.15.0-144-generic kernel from bionic-
proposed (along with other random bits)
Inspecting /boot/grub/grub.cfg shows references to -144-.
Rebooting, and uname shows -144- is booted.
Disabled -proposed again.
sudo do-release-upgrade to focal, to my surprise, does not fail with
conffile conflicts when -proposed is disabled. However, it does fail to
upgrade grub-efi-amd64* due to focal-updates having an earlier version
than bionic-proposed.
$ dpkg -S /etc/kernel/postinst.d/zz-update-grub
grub2-common: /etc/kernel/postinst.d/zz-update-grub
$
I do not understand what's happening here with the silent takeover of
the conffiles without an explicit Replaces allowing this; this is not
how I understood dpkg to behave.
I think this is verification-done for bionic and verification-failed for grub2
in focal (which should be withdrawn).
I do not understand what's happening with the conffile being
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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https://bugs.launchpad.net/bugs/1928674
Title:
grub-efi-amd64 from grub2-unsigned has lost kernel/postinst.d script
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