~ $ cat /usr/share/polkit-1/actions/org.x.xf86-video-intel.backlight-helper.policy
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
"-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
"http://www.freedesktop.org/standards/PolicyKit/1.0/policyconfig.dtd">
<policyconfig>
<vendor>The X.Org project</vendor>
<vendor_url>https://01.org/linuxgraphics/community/xf86-video-intel</vendor_url>
<icon_name>brightness</icon_name>
<action id="org.x.xf86-video-intel.backlight-helper">
<description>Modify lcd panel brightness</description>
<message>Authentication is required to modify the lcd panel brightness</message>
<defaults>
<allow_any>no</allow_any>
<allow_inactive>no</allow_inactive>
<allow_active>yes</allow_active>
</defaults>
<annotate key="org.freedesktop.policykit.exec.path">/usr/libexec/xf86-video-intel-backlight-helper</annotate>
</action>
</policyconfig>
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