Comment # 2 on bug 1226497 from Michael Chang

Hi Georg,

As far as I can tell, there are no major changes in how grub handles software
RAID in version 2.12. It should not fail like that when encountering a problem.
Normally, a failed root device access should drop you into a rescue shell,
providing some information for troubleshooting.

This makes me suspect that the issue might not be specific to software RAID.
Instead, it could be a new regression in version 2.12 caused by the newly
introduced bli module, which may also render the screen black indefinitely. [1]

Please check if this is the case by disabling 25_bli in grub.cfg. Follow these
steps after updating to grub 2.12:

> 1. chmod -x /etc/grub.d/25_bli
> 2. grub2-mkconfig -o /boot/grub2/grub.cfg

Ensure that the following section is completely **removed** from the resulting
grub.cfg:

> ### BEGIN /etc/grub.d/25_bli ###
> if [ "$grub_platform" = "efi" ]; then
>   insmod bli
> fi
> ### END /etc/grub.d/25_bli ###

Finally, reboot and check if it makes any difference?

[1] https://mail.gnu.org/archive/html/grub-devel/2023-07/msg00077.html

Thanks.