Bug#918966: new(?) backlight brightness script

[Josh Triplett]

On Fri, 11 Jan 2019 07:41:27 +0200 Aleksi Suhonen <debian-reportbug-2019 at ssd.axu.tm> wrote:
> After upgrading and rebooting a virtual machine that has only a virtual 
> serial console, I get this message:
> 
> /etc/init.d/brightness: 36: /etc/init.d/brightness: cannot create 
> /sys/class/backlight/acpi_video0/brightness: Directory nonexistent
> 
> It's not critical, but I'm wondering if desktop features could be 
> separated from this package. Or if there was a debconf knob to turn them 
> all on and off easily?

This isn't a purely "desktop" feature. In the past, some systems have
booted up with the backlight *off*, making the screen all but invisible,
and this script helps avoid that.