I would just like to report that this driver version seems to have improved Wayland sleep/resume. Early days still, but so far no sleep/resume crashes (though I have not tried connecting displayport so far).
nvidia-driver-565.57.01-4.fc41.x86_64
From Nvidia release notes:
- Fixed a bug that could cause suspend/resume to fail when using the NVreg_PreserveVideoMemoryAllocations option: Suspend doesn't work when PreserveVideoMemoryAllocations is enabled · Issue #472 · NVIDIA/open-gpu-kernel-modules · GitHub
Hopefully this is what was plaguing me. I’ll give it a couple of more days of closing/opening the lead without rebooting to make sure this works fine, but so far I’ve had no crarshes (as long as I stay away from DisplayPort connection).