20.04 upgarde error: grub-efi-arm64-signed

[mike-ab3ap]

Upgrading from 19.10 to 20.04 went smoothly except for one thing:

# apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n]
Setting up grub-efi-amd64-signed (1.142+2.04-1ubuntu26) ...
dpkg: error processing package grub-efi-amd64-signed (--configure):
installed grub-efi-amd64-signed package post-installation script subprocess ret
urned error exit status 10
dpkg: dependency problems prevent configuration of shim-signed:
shim-signed depends on grub-efi-amd64-signed | grub-efi-arm64-signed; however:
Package grub-efi-amd64-signed is not configured yet.
Package grub-efi-arm64-signed is not installed.

My next thought was to install grub-efi-arm64-signed :

apt install grub-efi-arm64-signed
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package grub-efi-arm64-signed is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source


E: Package 'grub-efi-arm64-signed' has no installation candidate
#


Has anyone run across this yet? I found similar but not identical problems after googling a bit. Thanks for any ideas.

Mike

[CelticWarrior]

'amd64' and 'arm64' are very different. The former is correct for your system, the latter doesn't exist because ARM systems boot in a very different way.

Is this a dual-boot system with Windows? If so, you need to disable Fast Startup in Windows. And disable Secure Boot and Fast Boot in UEFI regardless.

[mike-ab3ap]

Thanks for the info. I didn't realize the name was indicating ARM processor - no idea why that would be looked for!

It is a dual boot system, so I'll disable the items you mention next boot and will be happy to see the upgrade complaints go away. Thanks again.

Mike

[mike-ab3ap]

Quick update. I just rebooted and verified that Secure Boot and Fast Boot were already turned off in UEFI. Time to read up on shim-signed... - Mike