RTX4090, Ubuntu 22.04 black screen with two monitors

I have one workstation with RTX4090 and Intel i7. Two monitors connected, one 2K and one 4K. Sometimes I hit black screen for two monitors. Have to shutdown the workstation through power key long press.
Which log can help understand this issue and what is your suggestion?

One time I get this flicker screen

Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

Does vidia-bug-report.sh works after a reboot? How can I do it when the screen is black.

BTW, I have to replace a new RTX4090 card.

If you have log persistence set, some errors should be caught in the logs even after reboot.