Since the upgrade to Gnome 3.16, my /etc/X11/xorg.conf.d/20-intel.conf file is being ignored.

This file contains the following:

Section "Device"
    Identifier "card0"
    Driver "intel"
    Option "Backlight" "intel_backlight"
    BusID "PCI:0:2:0"

It is necessary on my system to control brightness after sleep.

/usr/lib/gnome-settings-daemon/gsd-backlight-helper is ignoring this configuration file. How do I configure gsd-backlight-helper to use the correct backlight device (/sys/class/backlight/intel_backlight) instead of the faulty one (/sys/class/backlight/toshiba)?

  • Thanks for the information. I'll edit my question accordingly.
    – To Do
    May 12, 2015 at 7:09
  • The '/sys/class/backlight/toshiba' device works only until I suspend my laptop.
    – To Do
    May 18, 2015 at 6:17

1 Answer 1


This AUR package solves the problem. It patches gnome-settings-daemon to prefer raw type backlight devices to platform ones.


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