Bug#845491: gnome: Fn brightness keys display OSD indicator but don't change actual brightness on ThinkPad W530

[alex_mayorga]

Package: gnome-core
Version: 1:3.20+2
Severity: normal
File: gnome

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation? Tried to modify brightness.
   * What exactly did you do (or not do) that was effective (or
     ineffective)? Pressed Fn+F8 and Fn+F9 multiple times.
   * What was the outcome of this action? OSD indicators apear but brightness doesn't change.
   * What outcome did you expect instead? Brightness changes.

*** End of the template - remove these template lines ***


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

Kernel: Linux 4.8.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=es_MX.UTF-8, LC_CTYPE=es_MX.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gnome-core depends on:
ii  adwaita-icon-theme            3.22.0-1
ii  at-spi2-core                  2.22.0-4
ii  baobab                        3.22.1-1
ii  caribou                       0.4.21-1
ii  dconf-cli                     0.26.0-2
ii  dconf-gsettings-backend       0.26.0-2
ii  empathy                       3.12.12-3
ii  eog                           3.20.5-1
ii  evince                        3.22.1-2
ii  evolution-data-server         3.22.2-1
ii  firefox-esr                   45.5.0esr-1
ii  fonts-cantarell               0.0.25-2
ii  gdm3                          3.22.1-1
ii  gkbd-capplet                  3.22.0.1-1
ii  glib-networking               2.50.0-1
ii  gnome-backgrounds             3.22.1-1
ii  gnome-bluetooth               3.20.0-1
ii  gnome-calculator              3.22.2-1
ii  gnome-characters              3.22.0-1
ii  gnome-contacts                3.22.1-1+b1
ii  gnome-control-center          1:3.22.1-1
ii  gnome-dictionary              3.20.0-3
ii  gnome-disk-utility            3.22.1-1
ii  gnome-font-viewer             3.22.0-1
ii  gnome-keyring                 3.20.0-3
ii  gnome-menus                   3.13.3-8
ii  gnome-online-accounts         3.22.2-1
ii  gnome-online-miners           3.22.0-1
ii  gnome-screenshot              3.22.0-1
ii  gnome-session                 3.22.2-1
ii  gnome-settings-daemon         3.22.1-1
ii  gnome-shell                   3.22.2-1
ii  gnome-shell-extensions        3.22.2-1
ii  gnome-software                3.22.1-1
ii  gnome-sushi                   3.21.91-2
ii  gnome-system-log              3.9.90-4
ii  gnome-system-monitor          3.22.2-1
ii  gnome-terminal                3.22.1-1
ii  gnome-themes-standard         3.22.2-1
ii  gnome-user-guide              3.22.0-1
ii  gnome-user-share              3.18.3-1
ii  gsettings-desktop-schemas     3.22.0-1
ii  gstreamer1.0-plugins-base     1.10.1-1
ii  gstreamer1.0-plugins-good     1.10.1-1
ii  gstreamer1.0-pulseaudio       1.10.1-1
ii  gvfs-backends                 1.30.2-2
ii  gvfs-bin                      1.30.2-2
ii  gvfs-fuse                     1.30.2-2
ii  libatk-adaptor                2.22.0-1
ii  libcanberra-pulse             0.30-3
ii  libcaribou-gtk-module         0.4.21-1
ii  libcaribou-gtk3-module        0.4.21-1
ii  libgtk-3-common               3.22.4-1
ii  libpam-gnome-keyring          3.20.0-3
ii  mousetweaks                   3.12.0-1
ii  nautilus                      3.22.1-2
ii  pulseaudio                    9.0-5
ii  sound-theme-freedesktop       0.8-1
ii  system-config-printer-common  1.5.7-2
ii  system-config-printer-udev    1.5.7-2
ii  totem                         3.22.0-2
ii  tracker-gui                   1.10.1-1
ii  vino                          3.22.0-1
ii  yelp                          3.22.0-1
ii  zenity                        3.22.0-1

Versions of packages gnome-core recommends:
ii  anacron                2.3-23
ii  network-manager-gnome  1.4.2-1

Versions of packages gnome-core suggests:
pn  gnome  <none>

-- no debconf information