vt(4) odd scrolling behavior

[Kyle Evans]

Hello!

I've had this odd behavior [1] on one of my machines with vt(4)
misbehaving in graphics mode following the beastie loader's screen.

Any ideas what might cause something like this, or if it's just
something unsupported? I have a PR open at [2] with pciconf -lv
output.

Thanks,

Kyle Evans

[1] http://files.kyle-evans.net/vt_scrolling.mp4
[2] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211876