LVFS Triaged Issue: dbx efivarfs IO error - fwupd/fwupd GitHub Wiki

Tags

"Plugin": "uefi_dbx"
"UpdateError": "failed to write data to efivarfs: Error writing to file descriptor*"

Summary:

Some system firmware does not accept a new dbx update.

Solution:

  • Reset your system firmware to system defaults and then try again
  • Update your system BIOS to a newer version, or contact the OEM for further help.

Workarounds

If resetting the system firmware does not work, and there are no firmware updates available, there are three things you can do:

  • Submit a pull request (a good example) to tell fwupd to ignore machines of this type. Use sudo fwupdtool hwids to find the CHIDs to use.
  • Add DisabledPlugins=uefi_dbx to the [fwupd] section in /etc/fwupd/fwupd.conf
  • Turn off UEFI SecureBoot in your BIOS