/dev/io problem in 5.3

[Gerard Samuel]

Louis LeBlanc wrote:

>Just got through buildworld/kernel on 5.3.  Strange problem I can't
>find the solution to.
>
>Xorg won't start:
>
>Fatal server error:
>xf86EnableIO: Failed to open /dev/io for extended I/O
>
>Please consult the The x.org Foundation support at http://wiki.X.org
>for help.
>Yada Yada Yada.
>
>Only one hit on Google, and it's just a bug report.  Anyone else have
>any ideas?  I know /dev/is supposed to be more dynamic in 5.3, but
>this isn't working.
>
Make sure your kernel has "device   io".
X needs it in 5.3.