thinkpad : e470 : bootup : barfs at acpi

[Kathe <kathe%sdf.org@localhost>]

have got myself a new lenovo thinkpad e470, it's my only machine.
attempted running netbsd 7.1.1 and found out that netbsd barfs
on the first-boot itself, it get's stuck at acpi phase.
now running ubuntu linux 16.04, working fine, but prefer netbsd.
i couldn't even get to a point where i can record the dmesg, led
me to wonder if sending in the dmesg using linux be of any help.
-kathe