commit 97302c6f83592f8dd9d09871fa3d630aba211969
author Puthikorn Voravootivat <puthik@chromium.org> Wed Sep 27 10:40:17 2017 -0700
committer chrome-bot <chrome-bot@chromium.org> Mon Oct 02 20:25:49 2017 -0700
tree 21b7684ac2bd46d66745884df8161546d5ff9ffa
parent b152039ff29d7f459f166b3ec9e14320d4275d94

autotest: Use 150 lux as default ambient light level

backlight_tool now supports --lux flag to specify ambient
light setting to use instead of the default 0 lux.

This CL makes autotest use this flag with 150 lux as
default indoor level to determine the default screen
brightness to use for power related tests.

BUG=b:38208252
TEST=power_LoadTest use sane brightness level in device with ALS

Change-Id: I8449e02a7ee19501e9766b74c24fb08f00e0a5a7
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/687857
Reviewed-by: Dan Erat <derat@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>

client/cros/power_utils.py

diff --git a/client/cros/power_utils.py b/client/cros/power_utils.py
index 4802010..43bf649 100644
--- a/client/cros/power_utils.py
+++ b/client/cros/power_utils.py
@@ -214,7 +214,8 @@
             return
 
         if not self.default_brightness_percent:
-            cmd = "backlight_tool --get_initial_brightness 2>/dev/null"
+            cmd = \
+                "backlight_tool --get_initial_brightness --lux=150 2>/dev/null"
             try:
                 level = float(utils.system_output(cmd).rstrip())
                 self.default_brightness_percent = \