[CentOS] After update to 8 (2004) ... system is unbootable - UEFI Secure boot

Hi all,

I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004).

Installed kernels are kernel-4.18.0-147.5.1.el8_1.x86_64 kernel-4.18.0-147.8.1.el8_1.x86_64 kernel-4.18.0-193.6.3.el8_2.x86_64

Unfortunately I can not boot into the latest kernel-4.18.0-193.6.3.el8_2.x86_64.

After grub2 screen I only see following line:

EFI stub: UEFI Secure Boot is enabled

Booting into the older kernel is still possible. The above line appears and after that the normal kernel output scrolls over the screen (rhgb quiet disabled).

Is the new kernel correctly signed?

What can I do?

-- Thanks Leon