Club 3D Insights | MOBILE VERSION

1 0 on 08-03-2021

Luster

Hello,
I have a MST Hub Display Port 1.2 leftover from my surface notebook (mini dsiplay port) I wanted to use for my new HP Pavilion Gaming Notebook with a Nvidia GTX 1660 Ti. It only has a HDMI out so I bought a Displayport to HDMI adapter. Its a Displayport 1.2 and HDMI 1.4 adapter.

Does this dervice work with this setup? I cant get it to work, also I noticed my system manager doesnt list any MST Hub as new devices.

0 1 on 09-03-2021

joevt

Only DisplayPort output can do MST. HDMI to DisplayPort adapters cannot do MST to multiple displays.

The specs for the HP Pavilion Gaming Notebook with a Nvidia GTX 1660 Ti at
https://store.hp.com/CanadaStore/Merch/Product.aspx?id=10M27UA&opt=ABL&sel=NTB says it has the following:

1 SuperSpeed USB Type-C® 10Gbps signaling rate (USB Power Delivery, DisplayPort™ 1.4, HP Sleep and Charge)

So what you need is a USB-C to DisplayPort adapter (such as the CAC-1507, CAC-1567). For your laptop which supports DisplayPort 1.4, I would choose the CAC-1567. Then you can connect your MST Hub to that. For higher refresh rates and resolutions, replace the DisplayPort 1.2 MST Hub with a DisplayPort 1.4 MST Hub (such as the CSV-7300 or CSV-1550).

I’m not sure if displays connected to the USB-C or HDMI ports of the laptop are connected to Nvidia or Intel graphics – check the Device Manager.

I don’t think there’s anywhere in Windows that shows the MST Hub. But the graphics drivers will be able to show multiple displays when connected to the MST Hub. If a MST hub is connected to Intel Graphics, then the Intel Graphics Control Panel can show the topology.

Linux has the fwupdtool command that can list MST hubs that use a Synaptics chip. The Linux dev directory can list the DisplayPort Aux channels of each DisplayPort port (for MST hubs, you need a display connected for the device to appear).

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DisplayPort to HDMI adapters (such as the CAC-1056, CAC-1070, CAC-2070, CAC-1080, CAC-1085) only work in one direction (DisplayPort output of computer to HDMI input of display). To connect HDMI output of computer to DisplayPort input of display, you need a HDMI to DisplayPort adapter (such as the CAC-1330, CAC-2330, CAC-1331,  CAC-1332)
Only DisplayPort output can do MST. HDMI to DisplayPort adapters cannot do MST to multiple displays.
The specs for the HP Pavilion Gaming Notebook with a Nvidia GTX 1660 Ti athttps://store.hp.com/CanadaStore/Merch/Product.aspx?id=10M27UA&opt=ABL&sel=NTB  says it has the following:
1 SuperSpeed USB Type-C® 10Gbps signaling rate (USB Power Delivery, DisplayPort™ 1.4, HP Sleep and Charge)
So what you need is a USB-C to DisplayPort adapter (such as the CAC-1507, CAC-1567). For your laptop which supports DisplayPort 1.4, I would choose the CAC-1567. Then you can connect your MST Hub to that. For higher refresh rates and resolutions, replace the DisplayPort 1.2 MST Hub with a DisplayPort 1.4 MST Hub (such as the CSV-7300 or CSV-1550).
I'm not sure if displays connected to the USB-C or HDMI ports of the laptop are connected to Nvidia or Intel graphics - check the Device Manager.I don't think there's anywhere in Windows that shows the MST Hub. But the graphics drivers will be able to show multiple displays when connected to the MST Hub. If a MST hub is connected to Intel Graphics, then the Intel Graphics Control Panel can show the topology.
Linux has the fwupdtool command that can list MST hubs that use a Synaptics chip. The Linux dev directory can list the DisplayPort Aux channels of each DisplayPort port (for MST hubs, you need a display connected for the device to appear).

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(MST) Hub DisplayPort™ 1.2 on HDMI Output Notebook