Since I have changed to nvidia-driver-460, two days ago, my system was ok but today the same problem happened again. My notebook has two graphics cards this nvidia and an intel graphics and I use three monitors (the notebook one + a LG widescreen and + an old LG Flatron) and I’ve noticed that the monitor on the intel graphics port is not working when this happens so I think that maybe the problem is not on the nvidea driver itself or it is some conflict. I’ll have to investigate more.
It seems that the problem I have is the bug with the i915 module and the kernel as pointed by generix in this post: