Re: [Tails-testers] Call for testing: Secure Boot, GRUB, an…

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Author: intrigeri
To: Tails list for early testers
Subject: Re: [Tails-testers] Call for testing: Secure Boot, GRUB, and overlayfs
Hi alienpup,

thank you for trying it out!

alienpup (2019-12-23):
> The only Windows 10, secure boot capable system immediately
> available failed to boot this image. Seconds into the boot process,
> a banner appeared advising "Device Authentication Failed".
> [...]

Ouch… "interesting"! I've looked this up online and could find
no occurrence of this problem.

I'd like to make sure I understand when exactly this happens.
Am I guessing right that it happens:

- after you've elected to boot from the Tails USB stick
- before you see the GRUB bootloader with the Tails logo in the


Also, how did you install our experimental USB image on this USB stick?

It would be interesting to know if Debian boots on this machine, with
Secure Boot enabled:

> The system in question is an HP Spectre laptop. Output of command
> lspci -nn is attached.

That's a good start. The output of the following commands would help
me identify this computer more precisely and look the problem up

sudo dmidecode -s system-manufacturer
sudo dmidecode -s system-product-name
sudo dmidecode -s system-version