Lenovo ThinkPad X1 Carbon User Manual page 118

2. Click the icon for the desired monitor (the Monitor-2 icon is for the external monitor).
3. Do the following:
– For Windows 7 and Windows 8.1: Click Advanced settings.
– For Windows 10: Click Display adapter properties.
4. Click the Adapter tab.
5. Make sure that the correct device driver name is shown in the adapter information window.
Note: The device driver name depends on the video chip that has been installed on your computer.
6. Click OK.
If the information is incorrect, reinstall the device driver.
• Problem: The screen is unreadable or distorted.
Solution: Make sure that:
– The monitor information is correct and the appropriate monitor type is selected. Refer to the solution
to the above problem.
– Make sure that an appropriate refresh rate is selected by doing the following:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an
electrical outlet.
2. Turn on the external monitor and the computer.
3. Right-click on the desktop and do the following:
– For Windows 7 and Windows 8.1: Click Screen resolution.
– For Windows 10: Click Display settings. Show the displayed window in full screen. Then
click Advanced display settings.
4. Click the icon for the desired monitor (the Monitor-2 icon is for the external monitor).
5. Do the following:
– For Windows 7 and Windows 8.1: Click Advanced settings.
– For Windows 10: Click Display adapter properties.
6. Click the Monitor tab.
7. Select the correct screen refresh rate.
• Problem: Wrong characters are displayed on the screen.
Solution: Did you follow the correct procedure when installing the operating system or program? If you
did, have the external monitor serviced.
• Problem: The Extend desktop function does not work.
Solution: Enable the Extend desktop function. See "Choosing a display mode" on page 41.
• Problem: If you use the Extend desktop function, you cannot set a higher resolution or higher refresh
rate on the secondary display.
Solution: Change the resolution and the color depth to lower settings for the primary display.
• Problem: Display switching does not work.
Solution: If you use the Extend desktop function, disable it, and change the display output location. If
a DVD movie or a video clip is playing, stop the playback, close the program, and then change the
display output location.
• Problem: The screen position on the external monitor is incorrect when that monitor is set for a high
resolution.
102
ThinkPad X1 Carbon User Guide