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c. In the Property field, select Preferred Band. Then from the Value menu, select Prefer 2.4
GHz band. The DFS issue is solved.
• I cannot connect my notebook computer to the wireless display adapter under Windows 8.1
operating system.
Check whether the Windows 8.1 operating system is preinstalled in your notebook computer. If the
Windows 8.1 operating system is not preinstalled but is updated from Windows 8 operating system, your
operating system might not have the Miracast driver. Contact the Lenovo Support to see if the problem
can be fixed by installing the Miracast driver into your notebook computer.
• My notebook computer cannot be connected to the wireless display adapter that has been
connected before.
Depending on the operating system on your notebook computer, do the following:
– For Windows 7:
1. Click Control Panel ➙ Devices and Printers. Then remove the wireless display adapter in the
device list.
2. Connect your notebook computer to the wireless display adapter again.
– For Windows 8 and Windows 8.1:
1. Swipe in from the right edge of the notebook computer screen to display the charms.
2. Click Settings ➙ Change PC settings ➙ PC and devices ➙ Devices. Then remove the wireless
display adapter in the projector list.
3. Connect your notebook computer to the wireless display adapter again.
• The display on the external monitor or projector is either too big or too small.
When the display on the external monitor or projector is either too big or too small, you need to adjust the
size of the display. Start the Intel WiDi program, and then click Settings ➙ Picture and Sound ➙ Ajust
cropping. You can tune the display by selecting the size from 0 (minimum) to 15 (maximum).
• The motion responds slowly on the external monitor or projector.
Start the Intel WiDi program, and then click Settings ➙ Current Display Settings. In the Quality vs
Speed box, select Prioritize Speed.
• The display is blurred or the pointer speed is slow on the external monitor or projector.
The wireless display adapter requires high bandwidth of the Wi-Fi network. So the possible reasons are:
– Your notebook computer is equipped with a single-band Wi-Fi module, and it is not suitable for the
wireless display adapter. Connect your notebook computer to the source-in connector on the wireless
display adapter with a VGA cable, or change to another notebook computer that supports dual-band
WiFi network.
– Congestion occurred in the channel that the wireless display adapter occupies in the 2.4 GHz band.
There might be other devices that are using the same channel as the wireless display adapter. You can
use another channel in the 2.4 GHz band or in the 5 GHz band.
• I cannot locate the wireless display adapter in the Wi-Fi network list after I have set my notebook
computer to be connected on the 5 GHz band only.
The 2.4 GHz band is needed for connecting the wireless display adapter. So do not set your notebook
computer to use the 5 GHz band only.
• Some digital media cannot be shared between DLNA devices.
The digital media format cannot be supported by DLNA.
18
ThinkPad Enterprise Wireless Display Adapter User Guide
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