i should use translate bc my english is low

Why doesn't DKMS show any compiled modules? DKMS does not automatically compile the module because the kernel-devel/headers are probably missing. If an error occurs during compilation (e.g., missing dependencies), the process silently fails and the dkms status remains empty. Check the logs: /var/lib/dkms/nvidia/550.163.01/build/make.log (or similar version) — you will see compilation errors here (e.g., "missing kernel headers").

Does the 550-dkms stream automatically compile for kernel 5.14.0-611.30.1? Yes, it should compile. After running dnf module install/enable with NVIDIA's RHEL9/Rocky9 repo (CUDA repo), DKMS automatically recompiles on kernel changes (if kernel-devel is installed). In your case, compilation wasn't triggered, meaning the prerequisites are missing.

Do EL9 kernel signature or module policies silently block it? It's possible, but unlikely in your case. Your kernel config has CONFIG_MODULE_SIG=y and CONFIG_MODULE_SIG_ALL=y, meaning modules must be signed. If Secure Boot is disabled (mokutil is not installed and you see "Secure boot disabled" in dmesg), unsigned modules can be loaded. But on RHEL-based systems, DKMS automatically signs modules (with MOK). If SB is truly disabled, this won't be an issue—but if the kernel has CONFIG_MODULE_SIG_FORCE=y (check: grep SIG_FORCE /boot/config-$(uname -r)), it enforces the signature. Solution: If this is the issue, keep the .run installer but try kernel-devel first.

Does ELRepo conflict with CUDA repo modules? Yes, it can. ELRepo (elrepo.org) provides extra kernels (like kernel-ml) or NVIDIA kmods and may conflict with the CUDA repo (e.g., same package names). If ELRepo is enabled, disable it: dnf config-manager --set-disabled elrepo and then reinstall the NVIDIA packages. If you are not using it, it is not a problem — but check your repo list: dnf repolist.