Update to latest Production Branch of drivers 620.70.06:
https://www.nvidia.com/en-us/drivers/details/283868/
Linux counterparts for x11/linux-nvidia-libs:
https://www.nvidia.com/en-us/drivers/details/283867/
As this version is newer than exisitng New Feature Branch (NFB)
of drivers, update -devel variants to the same version, too.
Additional note:
Starting from 615 series of drivers, possibly vtys before invoking
whichever of X11 or Wayland shifts screen downward with about
half character-based line, causing command prompt at the bottom
become hard to read.
Once X11 (tested only for xorg) or Wayland starts, it would be
fixed (on exitting X11 / Wayland or switching to vty from X11/
Wayland) until next restart of the computer.
This doesn't happen for everyone (among maintainance team of
NVIDIA GPU driver ports, only I myself am bitten).
So upgrading as-is.
The workaround is to switch to old-school configuration
without loading nvidia-drm.ko.
Forcibly flipping hw.nvidiadrm.modeset to 0 in /boot/loader.conf
and restart would also help.
But these workarounds may mean Wayland to become unusable.
And refreshing vty with Ctrl-L (unless mapped to non-default
functionalities) lets command line prompt at the top, thus,
this is not fatal anyway.
PR: 300531