Swapping Primary And Secondary Displays; Using The Ambient Light Sensor - Dell Latitude D631 User Manual

Swapping Primary and Secondary Displays

To swap your primary and secondary display designations (for example, to use your external monitor as
your primary display after docking):
1 Click the Start button and click Control Panel.
2 Under Pick a category, click Appearance and Themes.
3 Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, click
Display.
4 Click the Settings tab→ Advanced→ Displays tab.
See the documentation that came with your video card for additional information.

Using the Ambient Light Sensor

The ambient light sensor (ALS) is located on the bottom of the computer display panel. The ALS
detects available environmental light and automatically increases or decreases the display backlighting to
compensate for low-light and high-light environments.
You can enable or disable the ALS feature by pressing the <Fn> and left-arrow key combination.
NOTE:
Do not cover the ALS with any adhesive labels. If covered up, the ALS automatically sets the display
brightness to the minimum level.
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ambient light sensor
The ALS is disabled when your computer is shipped to you. If you enable the ALS and then use any of
the display brightness key combinations, the ALS is disabled and the display brightness is increased or
decreased accordingly.
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Using the Display