Question

1

Firmware update on Dell Latitude 5510 fails with "missing signed bootloader for secure boot"

rated 0 times [ 1] [ 0] / answers: 1 / hits: 794 / 3 Years ago, wed, may 26, 2021, 3:42:48

Using Ubuntu 21.04, I'm trying to update the firmware on a Dell Latitude 5510. The command is fwupdmgr update, and it looks good to begin with.

I receive this message:

Upgrade available for System Firmware from 1.5.1 to 1.7.0

Latitude 5510 must remain plugged into a power source for the duration of the update to avoid damage. Continue with update? [Y|n]:

This goes well while the update is downloading and decompressing, but stops in the authenticating stage with this message:

missing signed bootloader for secure boot: /usr/libexec/fwupd/efi/fwupdx64.efi.signed cannot be found

I have seen similar questions both here and elsewhere, but no solution. I obviously don't understand this signing business, but still hope that someone here can assist.

Simple question: how can I sign the bootloader using only Ubuntu?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

rowbris

Add To Favorites

Follow

Total Points: 419

Total Questions: 122

Total Answers: 101

Location: Norway

Member since Mon, May 23, 2022

2 Years ago

rowbris questions

1 New Lenovo + Ubuntu 22.04 - HDMI output not detected

Tue, Nov 29, 22, 17:47, 1 Year ago

1 Unable to update "Snap Store": cannot refresh "snap-store": snap "snap-store" has running apps (ubuntu-software)

Tue, Dec 7, 21, 13:53, 2 Years ago

1 Advice installing PSPP on Ubuntu 20.04

Fri, Jan 14, 22, 18:15, 2 Years ago

1 User root can't write to file in /tmp owned by someone else in 20.04, but can in 18.04

Thu, Dec 23, 21, 04:00, 2 Years ago

1 What are the equivalent Ubuntu 20.04 packages for these Ubuntu 18.04 packages?

Fri, Sep 24, 21, 09:29, 3 Years ago

View All

answered 3 Years ago amelican · Accepted Answer

You can turn off secure boot. The signature is for secure boot, and you can turn it off during the firmware update.

Depending on the firmware you might or might not need to run the computer with secure boot off after that operation. I think it is OK to run the computer without secure boot.

Ubuntu has a license from Microsoft to sign its software for secure boot, but several Linux distros have no such license (and don't want it because it is not FOSS). Those distros must be run with secure boot turned off.