Debian just enabled EFI_ZBOOT and the trick seems to be to install arch/arm64/boot/vmlinuz.efi instead of arch/arm64/boot/Image:
https://salsa.debian.org/kernel-team/linux/-/merge_requests/1362/diffs I believe this is what CONFIG_COMPRESSED_INSTALL would enable by default: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c7be57f2772c8ce4e1e43c6a79b8f8d401a4795 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2098111 Title: arm64: kernel image cannot be booted in UEFI despite EFI stub and ZBOOT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2098111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs