Broadcom Corporation BRCM1020 Manuel D’Utilisation

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Using the Display
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Using the Display
Adjusting Brightness
When a Dell™ computer is running on battery power, you can conserve 
power by setting the display brightness to the lowest comfortable level.
Press <Fn> and the up-arrow key to increase brightness on the integrated 
display only (not on an external monitor).
Press <Fn> and the down-arrow key to decrease brightness on the 
integrated display only (not on an external monitor).
 
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.
Switching the Video Image From Your Computer 
Display To a Projector
When you start the computer with an external device attached (such as an 
external monitor or projector) and turned on, the image may appear on either 
the computer display or the external device.
Press <Fn><F8> to switch the video image between the display only, the 
external device only, or the display and the external device simultaneously.
Setting 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 needed.