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su root
#default password is root also
'''Q: Why PiKVM-A3/A4 does not show the videoonly display <span class="tb_red">No Signals</span>?'''
A:
* Some laptops do not output any signal until you switch the output (usually via the FN + and an F5 key on the keyboard).
* Your computer may have turned on sleep mode for the monitor. Move the mouse to turn it off.
* If your desktop only has a VGA display port, there may be no video signal when you use <b>VGA to HDMI adapter</b>, and there is no way to solve this; However, you can try to lower the resolution and restart the PC to test, but the probability of success is very low.
==References==