xbacklight says "No outputs have backlight property"

[Adam Jackson]

On Wed, 2018-06-06 at 09:09 -0700, Yuri wrote:

> Section "Device"
>          Identifier "Card0"
>          Driver "scfb"
>          BusID "pci0:0:1:0"
> EndSection

You'd need to take this up with the scfb (presumably meaning FreeBSD)
developers. The availability of a backlight property depends on the X
driver in use.

- ajax