Public bug reported: There are at least two problems with this package.
1) It depends on grub-efi-a*64-signed, grub2-common. But Modern systems should use Shim + Unified Kernel Image (UKI) directly or over systemd- boot. But debian dependency solvers want to install Grub… 2) It seems, second stage 'grubx64.efi' is hardcoded into shim and it is not possible to specify another second stage. None of these tests works for me on ThinkPad X1 Extreme Gen5 Non-Secure Boot even with non-nx version nor '/EFI/Boot/' nor '/EFI/Ubuntu/ paths… Solution is to rename linux.efi to grubx64.efi which is not clear… efibootmgr --create --disk /dev/nvme0n1 --part 1 --label 'Ubuntu Shim+UKI linux.efi' --loader '/EFI/Linux/shimx64.nx.efi' --unicode 'linux.efi' efibootmgr --create --disk /dev/nvme0n1 --part 1 --label 'Ubuntu Shim+UKI /linux.efi' --loader '/EFI/Linux/shimx64.nx.efi' --unicode '/linux.efi' efibootmgr --create --disk /dev/nvme0n1 --part 1 --label 'Ubuntu Shim+UKI \linux.efi' --loader '/EFI/Linux/shimx64.nx.efi' --unicode '\linux.efi' efibootmgr --create --disk /dev/nvme0n1 --part 1 --label 'Ubuntu Shim+UKI Slash' --loader '/EFI/Linux/shimx64.nx.efi' --unicode '/EFI/Linux/linux.efi' efibootmgr --create --disk /dev/nvme0n1 --part 1 --label 'Ubuntu Shim+UKI BackSlash' --loader '/EFI/Linux/shimx64.nx.efi' --unicode '\EFI\Linux\linux.efi' See https://github.com/rhboot/shim/blob/main/dp.c. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: shim-signed (not installed) ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled' ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Fri Jun 12 10:58:29 2026 EFITables: SecureBoot: 6 0 0 0 0 SourcePackage: shim-signed UpgradeStatus: Upgraded to resolute on 2026-02-11 (121 days ago) ** Affects: shim (Ubuntu) Importance: Undecided Status: New ** Affects: shim-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute secureboot shim wayland-session ** Also affects: shim (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2156577 Title: Missing support for other second_stage than grub To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/2156577/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
