I want to try out Stream 9 and install it on a spare computer. Unfortunately,
There's a secure boot error: Invalid Signature Detected.

The SHA256 sum of the iso matches what's on the CentOS website. If secure boot
is disabled, the "Test this media" option in the grub menu passes.

This error doesn't happen on the same computer with the Debian 12 or Alma 9.2
installers.

I've tried booting a few other computers to compare and the results are mixed:

CentOS Stream 9 20230704.1 /w secure boot enabled

ASUS All-in-One (Ryzen 7 5700U): Error

ASUS Zenbook (Core i7-1165G7): Error

HP T730 (AMD RX-427BB): Boots, but the installer is unusable b/c of screwed up graphics

HP TE01 (Core i7-12700F): OK

HP TE01 (Core i7-13700): Error

Lenovo S540 (Core i5-10210U): OK

Minisforum em680 (Ryzen 7 6800U): Error

Debian 12 is OK for all of the above
Alma 9.2 is OK as well, except for the HP T730