Bug#837477: xbacklight doesn't do anything at all

[nickpontillo <nicholas00pontillo@gmail.com>]

Package: xbacklight
Version: 1.2.1-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

In Debian Testing, none of the commands or options with xbacklight do anything
or give any output whatsoever, EXCEPT if I type an invalid command, then it
gives me the help stuff about basic usage:

"""
usage: xbacklight [options]
  where options are:
  -display <display> or -d <display>
  -help
  -set <percentage> or = <percentage>
  -inc <percentage> or + <percentage>
  -dec <percentage> or - <percentage>
  -get
  -time <fade time in milliseconds>
  -steps <number of steps in fade>
"""

but it doesn't do anything if I actually use one of those valid commands.

 I think I have this bug:
https://bugs.launchpad.net/ubuntu/+source/xbacklight/+bug/1060431

I am on an acer c720 chromebook, if that matters.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

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

Versions of packages xbacklight depends on:
ii  libc6          2.23-5
ii  libxcb-randr0  1.11.1-1.1
ii  libxcb-util0   0.3.8-3
ii  libxcb1        1.11.1-1.1

xbacklight recommends no packages.

xbacklight suggests no packages.