USB C to second monitor question

[Jetster]

Trying to set up a touch screen as a second monitor to my gaming PC with a dedicated graphics. View sonic TD1655
Inputs on the monitor are mini HDMI and two USB C

It uses USB C for power as well

I can get it to work only with a HDMI cable, and a USB C for power

As far as I can tell it will only work with one cable if I use a Display port to USB C cable?
I tried turning on the in integrated graphics (BIOS
Tried turning on thunderbolt (BIOS
Messed with the display setting

Come on help me out
Win 11 btw, the rest of the specs are <

 

[TheLostSwede]

No, that wouldn't work, as DP doesn't deliver enough power.
Also, I don't think there are any DP to USB-C cables, only USB-C to DP.
Thunderbolt doesn't deliver enough power either, but does do DP Alt Mode.

 

[Jetster]

No, that wouldn't work, as DP doesn't deliver enough power.
Also, I don't think there are any DP to USB-C cables, only USB-C to DP.
Thunderbolt doesn't deliver enough power either, but does do DP Alt Mode.

The specs on the monitor say it will run off a display port power and yes they make Display port to USB C cables. I don't care for adapters just trying not to run two cables
My MB may not have the ability to push video out a USB C. I'm looking at a BIOS update now

 

[bonehead123]

IIRC, to get both data & video, and maybe power (a touchscreen display definitely requires the 1st two) over USB-C, both the monitor & the source have to support at least DP 1.4/Alt mode/Thunderbolt 4...

And looking at the monitor's specs, it appears that it does, so that begs the question, does your GPU ?

Since it works with a DP-to-USB cable, that suggests that it does not, as the cable is acting as a adapter/converter of sorts...

My MB may not have the ability to push video out a USB C

You originally said you were using a dedicated GPU, so which is it ?

 

[Jetster]

IIRC, to get both data & video, and maybe power (a touchscreen display definitely requires the 1st two) over USB-C, both the monitor & the source have to support at least DP 1.4/Alt mode/Thunderbolt 4...

And looking at the monitor's specs, it appears that it does, so that begs the question, does your GPU ?

Since it works with a DP-to-USB cable, that suggests that it does not, as the cable is acting as a adapter/converter of sorts...



You originally said you were using a dedicated GPU, so which is it ?

I haven't tried DP-to-USB cable yet. HDMI and USB works


I noticed i have a Hardware error I forgot about. After I upgraded to W 11 one device has an error I couldn't figure out then.

I need to pull the GPU and just try with integrated see if that works. That should confirm my USB C ports work

I'll do that later Thanks

 

[TheLostSwede]

The specs on the monitor say it will run off a display port power and yes they make Display port to USB C cables. I don't care for adapters just trying not to run two cables
My MB may not have the ability to push video out a USB C. I'm looking at a BIOS update now

Good luck then.

 

[Calenhad]

I need to pull the GPU and just try with integrated see if that works. That should confirm my USB C ports work

The normal usb c ports on your motherboard will not output any video signal. You need a usb c port that support display port alternative mode. Hence why some RTX 2000 cards had one usb c port on the back instead of a display port output. For a desktop pc you normally have to use one of the cables mentioned above and you will have to use a separate power cable.

Also, I don't think there are any DP to USB-C cables, only USB-C to DP.

Not sure they are directional. I know the two I got work both ways, but that is a fairly small sample. I assume because how DP alt mode work, the usb c controller can handle any differences due to directionality.

 

[TheLostSwede]

The normal usb c ports on your motherboard will not output any video signal. You need a usb c port that support display port alternative mode. Hence why some RTX 2000 cards had one usb c port on the back instead of a display port output. For a desktop pc you normally have to use one of the cables mentioned above and you will have to use a separate power cable.

Some graphics cards (Nvidia 3000-series) have VirtuaLink ports though, which may or may not work properly with DP Alt Mode. They should, but...

VirtualLink - Wikipedia

en.wikipedia.org

Not sure they are directional. I know the two I got work both ways, but that is a fairly small sample. I assume because how DP alt mode work, the usb c controller can handle any differences due to directionality.

USB-C to DP, no problem, but the other way around is by no means guaranteed. However, the OP was expecting to power the display from a DP output and DP only delivers 3.3 V at 500 mA, so going that route is a no go, but it seems like the OP knows better than me so... However, there are special cables that draws power from a USB port, that might work.

 

[Jetster]

The normal usb c ports on your motherboard will not output any video signal. You need a usb c port that support display port alternative mode. Hence why some RTX 2000 cards had one usb c port on the back instead of a display port output. For a desktop pc you normally have to use one of the cables mentioned above and you will have to use a separate power cable.

Not sure they are directional. I know the two I got work both ways, but that is a fairly small sample. I assume because how DP alt mode work, the usb c controller can handle any differences due to directionality.

That is confirmed, Z390 chip set does not support Alt DP mode from what I'm reading

Some graphics cards (Nvidia 3000-series) have VirtuaLink ports though, which may or may not work properly with DP Alt Mode. They should, but...

VirtualLink - Wikipedia

en.wikipedia.org

USB-C to DP, no problem, but the other way around is by no means guaranteed. However, the OP was expecting to power the display from a DP output and DP only delivers 3.3 V at 500 mA, so going that route is a no go, but it seems like the OP knows better than me so... However, there are special cables that draws power from a USB port, that might work.

Never said I was smarter, I know better . Didn't understand, but they do make a DP to USB C cable, and View Sonic trouble shooting guide says to use a DP to USB C cable if you don't have another way. I did not know that DP is only 3.3v. Will find out tomorrow when a cable arrives. I wish my 4070 had a USB C DP port

This monitor only power option is the USB (2 ports) I did see the DP cable with a USB 2.0 jumper for power. Thats when I went oh
The monitor did come with a power brick for USB C

I did fix the driver issue I forgot I had. Check

 

[Jetster]

Persistence pays off

Cable #2 works

 

[edumazieri]

Hello, I'm finding it a bit hard to find an answer to a specific question I have and since this thread is pretty close to it, I hope some of you will be so kind to help me
I'm trying to do basically the same thing (connect second touch screen monitor to a PC via usb-c), except a few differences:

I will output from (windows 10 PC) with nvidia rtx3080 (there's 1 DP and one HDMI free to output, seems like DP is the way to go?)

I will probably need a cable like this one: https://www.amazon.de/-/en/Matters-32-4Gbps-Bidirectional-DisplayPort-Thunderbolt/dp/B06XTYKLNJ/

The external touch screen monitor would be something like this: https://www.amazon.de/-/en/Touchscreen-Portable-External-Integrated-Stand【Upgraded】/dp/B0CTGX29QS/
It has a secondary usb-c port connector for power, so the connection with PC doesn't really need to send power through.

Now I'm wondering if the touch screen and display will work together, is that why the cable needs to be "bidirectional"? So that it can send video output to display but also touch data back?
Would my PC/Windows 10 get all that?

Thank you for the help!

 

[Jetster]

You're just going to have to try. Mine works but the touch screen part is tricky. Has a little delay but it works. I also have laptop with DP Alt mode and it works perfect. That's that correct way to do it. To have a GPU with DP Alt mode