Laptop Monitor not detected via KVM

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Sargan

PCHF Member
Nov 15, 2021
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I have an HDMI KVM 2*1 Switch (DC powered)
I connect my PC to one port and it switches through to monitor fine.
Mouse & keyboard via USB work fine.
I have tested on both port PC1 and PC2 to make sure OK.

I then connect my new Laptop (Dell Latitude 7390)
Mouse & keyboard work to it fine, but no video feed to monitor.
If I connect Laptop direct to monitor it works fine, so I have been able to prove all cables are good, and Laptop HDMI socket.

If I go to settings on Laptop …. It does not detect a monitor when connected to the KVM.
If I plug direct into monitor it works (and is detected)

This is the same on PC1 or PC2.

My PC works fine to either port ….. assumption is something is blocking Dell laptop from seeing monitor connected.

I have 2 identical KVM switches …both proven OK .. both have same issue with this Dell laptop
Assume it's related to EDID pass through on KVM ..... but strange other PC/Laptop work OK.
 
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