L1 KVM on Ubuntu

Hardware
1

Hi all,

I’m having a few issues with the L1 KVM with ubuntu 20.04 laptop using a thunderbolt 3 dock.

  • switching inputs from another source to this source takes about a minute for the login screen to pop up. Sometimes I will have to toggle to a different source then back to ubuntu for it to work. Switching to a windows (desktop) or MacOS (laptop) switching takes a few seconds.

  • using a wireless headset (Logitech G435) with the wireless USB receiver on the back USB3 port the mic is extremely muted and unusable. I have to move the dongle to the back of the dock for it to work properly. I have tried the other USB3 ports with the same results. I also tried a steelseries arctis pro wireless with the same issue.

The Dell precision 5570, 12th gen intel, A1000 GPU. Docking station is a plugable TB3, monitor Samsung G9 using both DP inputs into the KVM

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Cables used for display?

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club3d DP cables from dock to kvm.

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You may have to go fibbr, sorry. The USB part doesn’t make any sense. The usb3 ports are basically just a switch box so it doesn’t really mess with those ports the way it does with hid.

G9 firmware 1008 or newer is also needed

1 Like
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My g9 is on 1016 so thats good. I updated to 22.04 LTS and 5.19 kernel last night… maybe that will help.

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I think my issue with Ubuntu is it doesnt like using both DP inputs on the G9. I’m using a different DP input from another monitor and its switching fine.

I want to test with the HDMI input on the G9 any recommendations for HDMI to DP cable @wendell to use with the KVM?

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Important
If you’re going to take HDMI → DP you’re going to need a powered USB solution.

Club3D like you’re using is always a good choice.

HDMI → DP:

DP → HDMI:

I can get you a video of it working on the G9 here at L1 if you need :smiley:

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Awesome I’ll try Club3D CAC-2330. That cable should handle 2560x1440 @ 60hz. :crossed_fingers:

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Wait, is an hdmi signal or dp signal?

If you go from hdmi signal to dp input to display then you need a usb powered solution.

if you are going from the dp out of the kvm to hdmi in on the monitor you’d need amazon.

the thing > whatever is always signal source > signal sink.

Displays don’t source signal, they sink signal to display it.

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I want to go from the HDMI port on my G9 >> DP port on the KVM.

The connection from TB3 dock > KVM will still be DP to DP cable.

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That’s what I’m saying. You don’t go from a monitor to a computer the signal doesn’t flow that way. Hence my confusion.

I think you’ve picked the wrong kind of adapter based on your earlier post?

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