Displays not working with Lenovo Thunderbolt 3 gen 2 with Omen

[Nivisan_J]

Hello expirienced users

So I have recently bought this dock from Lenovo.

And the problem is that I have no display output- blank screens.

But I can recieve keyboard and mouse input.

Machine :OMEN HP 875-1000 Obelisk

OS: Windows 10 64 Bit (21H1)

Bootoption:   Dualboot - Ubuntu

So I have the following things connected to the dock besides the usual setup (ac , usb-c) : 

- 1x keyboard cable

- 2x display

- 1x mouse cable

I have connected the usb-c cable to the port on my motherboard.

I did install the drivers from the Lenovo website.

I have used the same exact setup with my HP notebook from work and my  own Lenovo Notebook (with dualboot Debian distro) on which it works.

Does someone know what the issue might be ? 
Thanks in advance!

[banhien · Accepted solution]

@Nivisan_J 

I don't know what is your OMEN HP 875-1000 !!! But it should have same ports as the following machine

               OMEN by HP Obelisk Desktop PC - 875-1002ns

The USB-C on the back of your machine is not a Thunderbolt™ 3 port which is NOT compatible with your Lenovo dock.

Regards.

[Nivisan_J]

Thanks for answering.

But the name of the PC isn't any NS the product code with which you can find it is : 5VN77AV

or simply here : OMEN by HP 875-1000 Obelisk Desktop PC (5VN77AV)

But you were right after all, found it after searching a little around I found the motherboard here : HP 8509 (U3E1)

The Port is gen 2.1 dock is 3.