usb-c g4 docking system

[JMNaudin]

Hello all

I have a HP envy 13 and a usb-c G4 docking station.

 I want to connect 3 hp w2072a screens with a display port to dvi converteer cable.

I tried it with one monitor and no signal

The dp port is dp++ and the cable is passive dl to dvi

THe HDMI port works if i connect HDMi to vga.

How to do the connection?

Must I get 2 active DP conversters or instead 2 dp to vga converters ?

Thanks

JMNaudin

[Huffer]

Need your exact model. Not all USB-C ports put out a video signal and if yours does not you will not get a DP signal. You do get an HDMI signal by something called DisplayLink. But to actuate the DP the port must carry something called an alt-DP signal which is a much wider bandwidth better video signal. So you want to connect 3 screens in addition to the laptop screen? You have an HDMI and 2 DPs on the dock, right? Unless your USB-C is alt-DP enabled the 2 DP ports are not going to put out a signal. Need model number of the laptop. 

[erico]

deferred to HP Expert message posted sooner.  Same request as mine of the OP.

[JMNaudin]

Hello

  Thanks for the reply.  My laptop model is HP envy 13 model ah0001ne.

 THe dock station is a HP usb-c G4 with 2 DP++ ports and a HMDI port.

 I want to connect the 2 DP ports to 2 HP w2072a vga/dvi monitors, the cable is a passive converter DP/DVI ( sure it is passive because of the low price). THe HDMI connection works.

Best regards

JMN

[Huffer]

Your laptop's USB-C port does support alt-DP. DP converters do not work well off such ports. I am sure the laptop would drive 2 monitors from the DP ports to DP connections and then you say the HDMI is working, likely for the reason I gave above. Its using DisplayLink not alt-DP. If your monitors do not have DP in connections then all you can try is an "active" DP to DVI or HDMI or whatever they do accept. 

[JMNaudin]

Hello

 Thanks for your attention. Infortunatly you just told me that I bought a useless laptop and an aditional dock station.

 THe laptop specs available to the public do not refer the DP full specs (as far as I can tell). Well I will put HP out of my list of future devices purchases.  The idea was to use two monitors not one.

 Just one last question, what about DP to VGA would it work?.Here where I am (jordan) getting active DP converters is almost impossible to acquire in a reasonable time and cost. Trying all possibilities is a hassle and time consuming and getting the products and returning them if they do not work is almost impossible.

Best regards

JMNaudin

[JMNaudin]

Hi

I am in denial...

  I went over the official specs of this model and it states the following about the ports

     1 USB 3.1 type C Gen 1 ( data transfer  up to 5 gb/s, power delivery, display port 1.2 , ho sleep and chatge; 2 usb 3.1Gen  etc

   DP 1.2 supports up to or near 20GB/s if I am not wrong, so  could you tell me what is missing or were is DP alt in all this ?

Best regards

JMN

[Huffer]

Alt-DP is the technology by which the USB-C port puts out a video signal. You have it. 

I can't see how this hardware is "useless" and you would run into this with any brand of laptop with a USB-C port with alt-DP. They want to be connected to Displayport connections and simple converters to legacy connections just do not work very well, if at all. This is not unique to HP.