I see. Well, I am running nvidia-drivers-180.60, and versions 185 and 190 are masked by ~x86. Same for the xorg-server-1.6.4. So the only thing I could do really is to update the kernel...
But xorg-server-1.5 was perfectly stable for me, so I don't see how kernel upgrade would be helpful here, given that nvidia-drivers aren't in the kernel.
