package shim-signed 1.40.7+15.4-0ubuntu9 failed to install/upgrade: il sottoprocesso installato pacchetto shim-signed script post-installation ha restituito lo stato di errore 7

[Mario Papale]

Whi?

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: shim-signed 1.40.7+15.4-0ubuntu9
ProcVersionSignature: Ubuntu 5.11.0-34.36~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-34-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.20
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Sep 15 21:08:45 2021
EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: EFI variables are not supported on this system.
ErrorMessage: il sottoprocesso installato pacchetto shim-signed script post-installation ha restituito lo stato di errore 7
InstallationDate: Installed on 2021-09-08 (6 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
Missing: /boot/efi/EFI/ubuntu directory is missing
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: shim-signed
Title: package shim-signed 1.40.7+15.4-0ubuntu9 failed to install/upgrade: il sottoprocesso installato pacchetto shim-signed script post-installation ha restituito lo stato di errore 7
UpgradeStatus: No upgrade log present (probably fresh install)

[Marc Deslauriers (mdeslaur)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Julian Andres Klode (juliank)]

Various dkms weirdness

"Error! The module acpi-call 1.1.0 is not currently installed."

But there are also like 3 services failing to start in the log, so maybe the system is just misconfigured somewhere that affects all of them.

The bug also indicates that EFI variables are not supported by the firmware, so I'm not sure fixing the underlying issues would result in a working system.