https://bugs.kde.org/show_bug.cgi?id=432589

--- Comment #3 from Xavier Vello <xavier.ve...@gmail.com> ---
snapd is not welcome on my systems, but I checked the official flatpak and it
only ships an unsigned EFI

$ find /var/lib/flatpak/app/org.freedesktop.fwupd/ -iname *.efi*
/var/lib/flatpak/app/org.freedesktop.fwupd/x86_64/stable/d0fd85cb1b12f7668ab365a4cb066c0928312eb62b33aab00ba840e279042cf0/files/libexec/fwupd/efi/fwupdx64.efi
$ sbverify --list
/var/lib/flatpak/app/org.freedesktop.fwupd/x86_64/stable/d0fd85cb1b12f7668ab365a4cb066c0928312eb62b33aab00ba840e279042cf0/files/libexec/fwupd/efi/fwupdx64.efi
[...]
No signature table present

Comparing to the grub EFI signed by Canonical:

$ sbverify --list /boot/efi/EFI/neon/grubx64.efi 
signature 1
image signature issuers:
 - /C=GB/ST=Isle of Man/L=Douglas/O=Canonical Ltd./CN=Canonical Ltd. Master
Certificate Authority
image signature certificates:
 - subject: /C=GB/ST=Isle of Man/O=Canonical Ltd./OU=Secure Boot/CN=Canonical
Ltd. Secure Boot Signing (2017)
   issuer:  /C=GB/ST=Isle of Man/L=Douglas/O=Canonical Ltd./CN=Canonical Ltd.
Master Certificate Authority

For users impacted by this, would downgrading to the 1.3.9-4 provided by the
focal repositories (and installing the matching fwupd-signed package) be a
viable option, or would it break something?

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