I'm using the 3.1.0-sabayon kernel with 173.14.31#3.1.0-sabayon nvidia-drivers.
I have tried running eselect opengl set nvidia and nvidia-xconfig but same problem.
Oh and probably the important part is the error X throws
(EE) NVIDIA(0): This video driver ABI is not supported.
Not sure if that's the problem or just a red herring. Can anyone help me get my X server back?