Black Screen on PI3 Mate 16.04

I just dd’d the 16.04 mate image onto the microsd card of my pi3
and booted. I’m connected to the dvi-d port on a dell 27 inch computer
monitor with a hdmi to dvd cable. The boot sequence shows up on
the monitor then mate graphic with the swirl and moving dots and
finally when its done black screen, no response to keyboard or mouse.

from the network side it answers pings, but there is no open port.

I’ve tried all the various suggestions I’ve seen about edits to the
config.txt. Safe mode just gets me lower rez for the boot msgs
and mate graphic, but still followed by black screen. Setting DVI mode
has no effect.

Looking at the SDCARD, I see from the Xorg log, its trying to use FBTURBO, jas some warning about 3D acceleration and DRI2, and
then segment faults.