With the transition to nvidia-drivers-375.82, the ewarn was adapted from "<---4.13" to "<---4.14" . <cite> Kernel 4.14 is now out, ... As expected, the latest NVIDIA drivers (384.98 and 387.22) are OK with this release, and VMware 14.0.0 – with the vmmon patch ( see http://rglinuxtech.com/?p=2090 ) – is OK as well.. </cite> [ http://rglinuxtech.com/?p=2104 ] CONFIRMATION: Installing 4.14.2-gentoo , re-emerging x11-drivers/nvidia-drivers-387.22:0/387, even a multi-screen X11 setup worked flawlessly, including nvidia-smi as well as nvidia-settings.
Confirmation : WORKSFORME : Same holds for newly bumped . . . x11-drivers/nvidia-drivers-387.34:0/387 ( Bug 638864 - x11-drivers/nvidia-drivers-387.34 version bump )