** Description changed:
[Impact]
* /etc/kernel/{postinst.d,postrm.d}/zz-update-grub missing on arm64
with grub-efi-arm64-signed installed, without grub-efi-arm64.
* /etc/kernel/{postinst.d,postrm.d}/zz-update-grub missing on amd64
with grub-efi-amd64-signed installed without grub-pc or grub-efi-amd64.
* This results in newly installed kernels not getting added to grub.cfg
and thus upon reboot one does not boot into the new kernel.
* In later series these scripts moved to grub2-common. Maybe we should
move these to grub2-common in bionic and earlier too, for compatibility
with onegrub. Or alternatively grub2-signed should ship these in grub-
efi-{amd64,arm64}-signed packages too.
[Test Plan]
* Install new grubs
+ * If testing on arm64 ensure that grub-efi-arm64 is not installed; and
+ grub-efi-arm64-signed is installed.
+
+ * If testing on amd64 ensure that grub-efi-amd64 and grub-pc are not
+ installed; and grub-efi-amd64-signed is installed.
+
* Install a new kernel that was not installed before
* Observe that grub.cfg is regenerated and new kernel is present
* Remove an old kernel
* Observe that grub.cfg is regenerated and new kernel is removed from
grub.cfg
[Where problems could occur]
* These are conffiles. Although nobody should modify them, care should
be taken when moving conffiles around.
[Other Info]
* First reported by klebers
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https://bugs.launchpad.net/bugs/1928674
Title:
due to a new recommends grub-efi-arm64-signed is installed which does
not have postinst.d script
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