Ubuntu
grub2-unsigned package

  1. Xenial (16.04)
  2. Bug #1930742
  3. Comment #18

Comment 18 for bug 1930742

Revision history for this message
Dimitri John Ledkov (xnox) wrote :

```
However, on the c6g.metal instance, while apt did not report an error, there were error messages printed out:

Inserting key update /usr/share/secureboot/updates/dbx/dbxupdate_arm64.bin into dbx
Error writing key update: Invalid argument
Error syncing keystore file /usr/share/secureboot/updates/dbx/dbxupdate_arm64.bin
Setting up grub-efi-arm64-signed (1.167~18.04.5+2.04-1ubuntu44.1.2) ...
```

Yes this is mostly harmless. dbxupdates are attempted, but never fatal, and will be retried on every boot, until they work. or not.

It is an indication that efivariable storage is not working, but also shouldn't matter on that instance type as it doesn't have UEFI secureboot.