Fresh Installation Of FreeBSD 11.2--Mate Not Working Properly

[B J]

<snip>

> Nothing, that is the correct behaviour. In order to get
> a window manager or desktop environment, just install it. ;-)
>
> Further details:
>
> https://www.freebsd.org/doc/handbook/x-config.html

I can't get a proper display when I run:

xinit mate-session

I get the following message:

scfb trace:  probe start
scfb trace:  probe done
failed to set mtrr:  Invalid argument
xinit:  connection to X server lost
waiting for X server to shut down failed to unset mtrr:  No such file
or directory (II)
Server terminated successfully (0).
Closing log file.

Is this a serious problem?  If so, how can I fix it?  Thanks.

BMJ