Firmware update does not install

[Brughon]

Steps I take:
Open gnome-software
Go to "Updates" tab
Click "Update" next to "Dell Inc. System Firmware 1.10.1 > 1.12.2"
Click "Restart"
System is restarted without firmware flash
When opening gnome-software the firmware update is still available for installation

Don't know whether it's a bug of gnome-software or fwupd.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-software 3.35.91-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 17 13:08:12 2020
InstallationDate: Installed on 2020-03-09 (8 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200304)
InstalledPlugins:
 gnome-software-plugin-flatpak N/A
 gnome-software-plugin-snap 3.35.91-0ubuntu1
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report. Do you have secure boot enabled? It could be the same as https://github.com/fwupd/fwupd/issues/1421

[Mario Limonciello (superm1)]

Right now there is a regression in shim in Ubuntu 20.04. I've marked this as a duplicate accordingly.