[ipxe-devel] IPXE fails to verify images on EFI system

[Michael Brown]

On 21/06/2019 09:48, Ján ONDREJ (SAL) wrote:
>    I am trying to make boot.salstar.sk working on an EFI system. After some
> troubles with disabling secure boot or allowing my ipxe.efi image, it's
> now booting, but my scripts are unable to validate ipxe script files.
> 
>    Error message is:
> 
> Could not start download: Invalid argument (http://ipxe.org/1c25e082)
> 
> Using an "chain http://..." command works well, but without signature
> checking.
> 
> Is this a bug of ipxe or is it a "feature" of EFI booting?

As per the error page, it indicates a failure to obtain a usable entropy 
source.  Try building with DEBUG=efi_entropy,entropy,drbg

Michael