Hang on the login screen after installing CUDA driver - Dell R740 and Tesla T4

Hi team. I’m facing a problem after installing the GPU driver on Ubuntu 16.04.

We are installing driver 418 and CUDA 10.1

After installation, I can run nvidia-smi and run an application based on CUDA, perfectly.

But after I server reboot, I’m getting a pretty strange behavior: when I insert the Linux credentials the OS gets stuck forever at the login screen. It blinks and returns to the main login screen again.

Please see the attached NVIDIA bug report, one before reboot (no issues) and one after reboot (locked at login screen).

Any clue?

ps: having some problems to attach the bug report files, so please consider the following links:
BEFORE: http://paste.ubuntu.com/p/dfR64mn8cg/
AFTER: http://paste.ubuntu.com/p/3QKsHYrf29/
Nvidia Report 28.02 Post.pdf (2.8 MB) Nvidia Report 28.02 Pre.pdf (2.8 MB)

Any comment?