Bug#833508: xbacklight reports "No outputs have backlight property"

["gustavo panizzo \(gfa\)" <gfa@zumbi.com.ar>]

Package: xbacklight
Version: 1.2.1-1
Followup-For: Bug #833508

I have the same problem on 2 laptops, with different GPUs

Intel Corporation 3rd Gen Core processor Graphics Controller
Intel Corporation Broadwell-U Integrated Graphics (rev 09)

I think the problem started after this upgrade
upgrade xserver-xorg-video-intel:amd64 2:2.99.917+git20160522-1
2:2.99.917+git20160706-1

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (300, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xbacklight depends on:
ii  libc6          2.23-4
ii  libxcb-randr0  1.11.1-1
ii  libxcb-util0   0.3.8-3
ii  libxcb1        1.11.1-1

xbacklight recommends no packages.

xbacklight suggests no packages.

-- no debconf information