Public bug reported:
I tried to update KEK CA firmware with firmware updater and got message:
org.freedesktop.fwupd.InvalidData: [failed to write-firmware: failed to
write (null): failed to write data to efivarsfs: Error writing to file
descriptor: Invalid argument] Later I checked mokutil utility with
terminal command "sudo ubuntu-bug mokutil" and got this bug report.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: mokutil 0.6.0-2build3
ProcVersionSignature: Ubuntu 6.17.0-35.35~24.04.1-generic 6.17.13
Uname: Linux 6.17.0-35-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Jun 27 12:24:33 2026
InstallationDate: Installed on 2025-07-23 (339 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
ProcEnviron:
LANG=et_EE.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
SourcePackage: mokutil
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: mokutil (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2158512
Title:
Kek ca firmware update fails
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