This bug was fixed in the package flash-kernel - 3.104ubuntu6
---------------
flash-kernel (3.104ubuntu6) jammy; urgency=medium
* Introduce "Boot-Kernel-Max-Size" and support for compressing kernel
images that exceed it. This will allow installation of larger
uncompressed kernels on HP ProLiant m400 cartridges. LP: #1954692
* Drop support for HP ProLiant m800 cartridges. The kernel flavor they
require (-keystone) never shipped in Ubuntu.
-- dann frazier <da...@ubuntu.com> Mon, 31 Jan 2022 16:47:18 +0000
** Changed in: flash-kernel (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1954692
Title:
Reconsider compressed kernels on arm64
Status in maas-images:
New
Status in flash-kernel package in Ubuntu:
Fix Released
Status in linux package in Ubuntu:
Triaged
Bug description:
Compressed kernel images were introduced in bug 1384955 to work around
some limits on old u-boot systems. This in turn broke grub-check-
signatures, meaning that while cloud images booted in secure boot, you
could not upgrade grub or install new kernels on secure systems as
that would trigger a "you have unsigned kernels" message. grub 2.06
also fails to boot the images, as it verifies before decompressing.
Work to fix grub to handle such images on arm64 for backward
compatibility is tracked in bug 1954683. This bug is to reconsider
whether the change is still necessary or could be removed in 22.04
such that we can have proper UEFI executables again.
To manage notifications about this bug go to:
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