To clarify my comment #1: update files are installed in /boot/efi/EFI/ubuntu/fw, but on reboot, there is no sign of fwupdx64.efi ever running, boot process goes straight to grub.
To clarify my comment #1: update files are installed in /boot/efi/ EFI/ubuntu/ fw, but on reboot, there is no sign of fwupdx64.efi ever running, boot process goes straight to grub.