USB-C Docking station not displaying to extended monitors

[Lazirous]

When I connect external monitors to the Docking station then insert the USB-C cable no display appears. Ive tried it with other laptops (Probook 430 G8) and it works. But, with the new elitebook x360 830 G6 Notebook PC the display is not working. It connects to the devices and recognizes they are there but will not display to them. I've researched the compatibility of the two devices and it states it should work. Is there a driver or setting I a missing with the Elitebook?  Any advice would help. 

HP Elitebook x360 830 G6 Notebook PC

HP USB-C Dock G5

Things I've tried,

Disconnecting and reconnecting Docking station,

Adjusting display setting from extended to duplicate,

Updating the Docking station Firmware,

Connecting one display at a time,

and Connecting it to older laptops with success.

[banhien]

@Lazirous 

USB-C Gen 5 is compatible with the following machines

HP Elite x2 1012 G2, G4
HP Elite x2 1013 G1, G3, G4
HP EliteBook Folio G1
HP Elite Dragonfly
HP EliteBook 1030 G4
HP EliteBook x360 1030 G2, G3, G4, G7
HP EliteBook x360 1040 G4, G5, G6, G7
HP EliteBook 1050 G1
HP EliteBook 800 series G5, G6, G7
HP EliteBook 800 HC series G5, G6
HP EliteBook 840r G4
HP EliteBook 700 series G5, G6
HP ProBook 600 series G4, G5, G7
HP ProBook 400 series G5, G6, G7, G8
HP Probook x360 435 G7
HP ProBook x360 440 G1
HP Pro x2 612 G2
HP ZBook x2 G4
HP ZBook Firefly 14 G7
HP ZBook Firefly 15 G8
HP ZBook 14u/15u G5
HP ZBook 15/17 G5*
HP ZBook Power G7
HP ZBook Fury 15/17 G7*
HP ZBook Create G7*
HP ZBook Studio G7*
HP ZBook Studio x360 G5*
HP ZHAN 66 Pro 13/14/15 G2
HP ZHAN 66 Pro 14 G4
HP ZHAN 66 Pro 14/A14/15 G3
HP ZHAN 66 AMD Pro 14 G3

I can't see your machine on the list. Looks like your machine is compatible with      

• Supports 2 external monitors when on the HP Elite 90W Thunderbolt 3 Dock; Max resolution = 2.5K @ 60 Hz (DisplayPort 1) and 2.5K @ 60 Hz (DisplayPort 2) or 4K @ 60 Hz (one DisplayPort) and 4K @ 60 Hz (Type-C output port using a Type C-to-DP adapter)
• Supports 2 external monitors when on the HP Thunderbolt Dock 120W G2; Max resolution = 2.5K @ 60 Hz (DisplayPort 1) and 2.5K @ 60 Hz (DisplayPort 2) or 4K @ 60 Hz (one DisplayPort) and 4K @ 60 Hz (Type-C output port using a Type C-to-DP adapter)

Regards.   

[Lazirous]

According to one link found at hp this device is compatable. This link is one example of combatibility that I have found. Any other suggestions? Like I said everything else works and it detects the monitors but it is not displaying to them.

i.e.

HP EliteBook x360 1020 G2 Notebook PC;

HP EliteBook x360 830 G6 Notebook PC;

HP EliteBook x360 830 G5 Notebook PC;

HP EliteBook 830 G6 Notebook PC;

HP EliteBook 836 G6 Notebook PC;

HP EliteBook 840 G6 Notebook PC;

https://www8.hp.com/h20195/v2/GetPDF.aspx/c06706129.pdf