PluginFlag:efivar not mounted

Background

At startup fwupd checks to see if the efivarfs filesystem has been loaded by the kernel. Several plugins need to read and write to EFI variables, and if this action is not available they fail to start up and a message is shown with a link to this page.

The Required efivarfs filesystem was not found will show if you are running on a system either with no kernel support for efivarfs included, or when userspace has not mounted it into the required directory of /sys/firmware/efi/efivars/

Missing efivarfs normally indicates that the user is running a kernel with incorrect Kconfig settings, or is using an alternate boot manager that does not mount the filesystem at the correct time, or at the correct place. There's not a lot fwupd can do in this case.