I have a warning about REVOKED UEFI booloader
Note : this warning was present in
ubuntu-24.04-desktop-amd64
but has been fixed in
ubuntu-24.04.1-desktop-amd64
This is working as designed.
The ubuntu-24.04-desktop-amd64 ISO was built before there was an update to the signing keys used to authorise the UEFI installation. If we jumped in a time machine back to April 2024, that ISO would still work. But since the signing keys were changed, that ISO is no longer installable on a system with the new keys.
That’s normal, and function of a working secure boot environment.
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Some more info on UEFI Secure Boot issues & revoked keys. SBAT self-check failed: Mitigating the impact of shim 15.7 revocation on the Ubuntu boot process for devices running Windows & https://mjg59.dreamwidth.org/70348.html