Dell Latitude D531 (Mid 2007) - Manual (Page 41)

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6
Using the Display
Display Properties
Adjusting Brightness
When a Dell™ computer is running on battery power, you can conserve power by setting the display
brightness to the lowest comfortable setting by pressing and the up- or down-arrow key on
the keyboard.
NOTE: Brightness key combinations only affect the display on your portable computer, not monitors or
projectors that you attach to your portable computer or docking device. If your computer is connected to an
external monitor and you try to change the brightness level, the Brightness Meter may appear, but the
brightness level on the external device does not change.
You can press the following keys to adjust display brightness:
• Press and the up-arrow key to increase brightness on the integrated display only (not on an
external monitor).
• Press and the down-arrow key to decrease brightness on the integrated display only (not on
an external monitor).
Switching the Video Image
When you start the computer with an external device (such as an external monitor or projector)
attached and turned on, the image may appear on either the computer display or the external device.
Press to switch the video image between the display only, the external device only, or
the display and the external device simultaneously.
Display Resolution and Refresh Rate
NOTE: If you change the display resolution from the current settings, the image may appear blurry or text may
be hard to read if you change the resolution to one not supported by your computer and display. Before you
change any of the display settings, make a note of the current settings so you can change back to the previous
settings if you need to.
You can enhance the legibility of text and change the appearance of images on the screen by
adjusting display resolution. As you increase resolution, items appear smaller on the screen. In
contrast, lower resolution causes text and images to appear larger and can benefit people with vision
impairments. To display a program at a specific resolution, both the video card and the display must
support the program, and the necessary video drivers must be installed.