Troubleshooting - Lenovo ThinkPad USB 3.0 Ultra Dock User Manual

Table 3. Supported resolutions and refresh rates: DP and HDMI simultaneous output (continued)
Resolution
1280 x 768
1280 x 800
1280 x 960
1280 x 1024
1360 x 768
1366 x 768
1368 x 768
1400 x 1050
1440 x 900
1600 x 900
1600 x 1200
1680 x 1050
1920 x 1080
1920 x 1200
2048 x 1080
2048 x 1152

Troubleshooting

This chapter provides some troubleshooting hints and tips to assist you if you experience any problems with
the ultra dock. Check the following items first to try to solve the problem.
General
1. The ThinkPad USB 3.0 Ultra Dock icon is not displayed on the screen.
The ThinkPad USB 3.0 Ultra Dock icon is displayed only when an external monitor is connected to
the ultra dock. If an external monitor is connected, ensure that the video cable is fully inserted into the
ultra dock and the monitor.
2. The power and connection indicator of the ultra dock is not on.
Ensure that you have correctly connected the power adapter to the ultra dock and a working electrical
outlet, and that you have pressed the power button. Do not use any power adapter other than the one
provided with the ultra dock.
3. You connect the ultra dock to a computer with the provided USB 3.0 cable, but the ultra dock
does not work.
a. Ensure that the ultra dock is well powered by its power adapter. the ultra dock always needs external
power adapter for operation, because it does not take power from the USB connector attached
to your notebook computer.
b. Ensure that the device driver of the ultra dock is well installed; if not, install the device driver and
restart the computer.
c. Ensure that the USB connector on your computer works well; if not, replace with other USB
connectors.
4. The 2.4 GHz wireless keyboard or 2.4 GHz wireless mouse function is interrupted. The mouse
pointer lags or it cannot move. Some characters are lost when you input by the keyboard.
Refresh rate (Unit: Hz)
60, 75, 85
60
60, 85
60, 75
60
50, 60
60
60, 75, 85
60
60
60
60
50, 60
60
60
60
.
Chapter 1 ThinkPad USB 3.0 Ultra Dock
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