Intel Kaby Lake (i915 or i945) issue

[Steven Friedrich]

I am running  FreeBSD 12.0-RELEASE-p10
My computer has built in  Intel Kaby Lake, i.e., i915 or i945.
Without port graphics/drm-fbsd12.0-kmod, I get a normal screen from X windows.
With this port instaled, my X display is shifted, it appears like horiz sync 
is off. The origin begins about 250 pixels from the right edge of the screen.

Am I doing something incorrect?  

I installed this port hoping I could get audio routed through HDMI (pcm2).