Fossapup remaster: The X server doesn't start if Lockdown is enabled at boot

[Chrysolite Azalea]

Hello everyone! I'm creating a Fossapup remaster with several enhancements, and I would like to ask a question. I've compiled the kernel with Lockdown enabled (it's turned off by default). When I pass a lockdown=integrity option to the kernel command line, the system loads, but the X server fails to start.

The screenshot:

Screenshot_2022-10-16_19-14-02.png (28.75 KiB) Viewed 229 times

I'd like to mention that enabling Lockdown when the X server is running doesn't seem to affect it, and on Linux Mint, the X server starts and works fine with Lockdown enabled at boot. What can cause the problem?

[Chrysolite Azalea]

Lockdown is a Linux security module that protects the running kernel from modifications by privileged processes. It also blocks hibernation, kexec reboot and unsigned module loading.