Lenovo ThinkPad T540p, User Manual

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3. Press F7, then select Duplicate or Extend .
To change the resolution for each monitor, do the following:
1. Right-click on the desktop, and click Screen resolution .
2. Click the Monitor-1 icon, which is for the primary display (the computer display by default).
3. Set the resolution for the primary display.
4. Click the Monitor-2 icon, which is for the secondary display (the external display by default).
5. Set the resolution for the secondary display.
6. Click Advanced settings and set up the color quality on the Monitor tab.
7. Click OK to apply the changes.
Considerations for using the Extend desktop function
• In Extend desktop mode, only the primary display shows DOS full-screen and the other display is
blacked out.
• If your computer has the Intel graphics card, you can designate the primary display by doing the following:
1. Right-click on the desktop and select Screen resolution .
2. Click the desired display image and select the Make this my main display check box.
3. Click OK .
• When a program using DirectDraw or Direct3D is running in full-screen mode, only the primary display
shows the output.
• You cannot use the display switching function in Extend desktop mode.
Using the NVIDIA Optimus Graphics feature
Some ThinkPad notebook computers support NVIDIA Optimus Graphics.
To achieve the best balance between the computer performance and a long battery life, depending on the
graphics quality demand of the running program and power plan settings that you use, the NVIDIA Optimus
Graphics feature automatically switches between High Performance Graphics and Energy Saving Graphics,
with no need to restart your computer, close programs, or intervene manually.
Using the color sensor
Some models are equipped with a color sensor. The color sensor enables you to measure and adjust the
color accuracy of your displays.
To use the color sensor, do the following:
• For Windows 7: Click Start ➙ All Programs ➙ X-Rite ➙ Color Calibrator ➙ PANTONE Color Calibrator .
• For Windows 8 and Windows 8.1: Move the cursor to the top-right or bottom-right corner of the screen
to display the charms. Click the Search charm and search X-Rite .
When the color sensor is in use, the color-sensor indicator blinks twice at regular intervals.
If your computer comes with a color sensor, the display provides a color profile that can work with the
Microsoft Image Color Management (ICM) function. If the graphics software you are using is compatible
with ICM, you can display a color image on your monitor and match it with the same quality one on another
device, such as a scanner or a printer.
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User Guide