/usr/share/powerd/device_configs/config-grouper.xml is in powerd 0.16+16.04.20160204.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<!--
/*
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<!-- These resources are around just to allow their values to be customized
for different hardware and product builds. -->
<resources>
<!-- Flag indicating whether the we should enable the automatic brightness in Settings.
Software implementation will be used if config_hardware_auto_brightness_available is not set -->
<bool name="config_automatic_brightness_available">true</bool>
<!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
The N entries of this array define N 1 zones as follows:
Zone 0: 0 <= LUX < array[0]
Zone 1: array[0] <= LUX < array[1]
...
Zone N: array[N - 1] <= LUX < array[N]
Zone N + 1 array[N] <= LUX < infinity
Must be overridden in platform specific overlays -->
<integer-array name="config_autoBrightnessLevels">
<item>5</item>
<item>15</item>
<item>50</item>
<item>100</item>
<item>200</item>
<item>400</item>
<item>1000</item>
<item>2000</item>
<item>3000</item>
<item>5000</item>
<item>10000</item>
<item>30000</item>
</integer-array>
<!-- Array of output values for LCD backlight corresponding to the LUX values
in the config_autoBrightnessLevels array. This array should have size one greater
than the size of the config_autoBrightnessLevels array.
This must be overridden in platform specific overlays -->
<integer-array name="config_autoBrightnessLcdBacklightValues">
<item>5</item> <!-- 0-5 -->
<item>20</item> <!-- 5-15 -->
<item>30</item> <!-- 15-50 -->
<item>40</item> <!-- 50-100 -->
<item>50</item> <!-- 100-200 -->
<item>60</item> <!-- 200-400 -->
<item>70</item> <!-- 400-1000 -->
<item>80</item> <!-- 1000-2000 -->
<item>130</item> <!-- 2000-3000 -->
<item>180</item> <!-- 3000-5000 -->
<item>255</item> <!-- 5000-10000 -->
<item>255</item> <!-- 10000-30000 -->
<item>255</item> <!-- 30000+ -->
</integer-array>
<!-- Minimum screen brightness allowed by the power manager. -->
<integer name="config_screenBrightnessDim">5</integer>
</resources>
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