[ipxe-devel] Issues with HTTP/HTTPS using Ryzen 3000 series

Tom Siewert tom.siewert at hetzner.com
Fri Aug 16 05:59:29 UTC 2019

Hi Michael,

I've disabled platform's EFI_RNG_PROTOCOL in iPXE and it works now!

Sadly, the freeze problem on the MSI board is still there.


On 8/15/19 7:08 PM, Michael Brown wrote:
> On 15/08/2019 15:09, Tom Siewert wrote:
>> currently, I have some issues with HTTPS using Ryzen 3000 series
>> systems.
>> My test system has a Ryzen 3600 (also tried to use a 3850X) and an
>> ASRock
>> B450 board with 64GB ECC RAM and 2x 1TB NVMe.
>> The error 1c25e0c82 (Invalid argument) gets thrown by iPXE becuase of
>> entropy issues.
> Try forcibly disabling the use of the platform's EFI_RNG_PROTOCOL,
> e.g. by editing interface/efi_entropy.c to comment out the line
> This will force the entropy gathering code to fall back to using timer
> interrupt beating as the mechanism for generating entropy.
> If this fixes the 1c25e082 error, then we should add the capability to
> detect a broken EFI_RNG_PROTOCOL (e.g. by using the existing entropy
> source quality test code) and automatically fall back to using the
> timer instead.
> Michael
Mit freundlichen Grüßen
 Tom Siewert
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