Z590 - How do I chain monitors through the Thunderbolt ports?

Jancarius

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Hello. I recently build a new PC with the Z590. It is rackmounted, and my intention was to run a thunderbolt 3 optical cable between a Starlink TB hub with 2 display ports and a USB hub to the rack.

However, I cannot seem to get a signal this way. I have connected a display port to MiniDP cable in the back, but to no effect. What step am I missing here?
 

citay

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Well, what Z590 model do you have exactly? MSI have 15 different Z590 models.

Check if your board model has the USB-C ports marked as "Thunderbolt 4 (USB-C)" and has Thunderbolt passthrough mentioned in the manual, like on the screenshot below.
Otherwise, you might be looking at a regular data-only USB-C port.

Screenshot 2021-11-02 at 14-38-23 E7D04v1 0 pdf.png
 

Jancarius

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Well, what Z590 model do you have exactly? MSI have 15 different Z590 models.

Check if your board model has the USB-C ports marked as "Thunderbolt 4 (USB-C)" and has Thunderbolt passthrough mentioned in the manual, like on the screenshot below.
Otherwise, you might be looking at a regular data-only USB-C port.

Screenshot 2021-11-02 at 14-38-23 E7D04v1 0 pdf.png
Mine looks like this except it also has a 10GB ethernet port.
 

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citay

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Well, what model is it? Enter the BIOS, it's written there.
 

Jancarius

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Welp, now I seem to have a new problem. So because my PC's boot order seems to mean that my keyboard isn't started in time to hit Del, I've been using the Advanced Reboot option in Windows to launch the UEFI firmware during the reboot. When I did this just now, it seems to have booted, but no signal is sent to my monitor.

Edit: This began after I upgraded the BIOS to the latest version. The normal boot sequence appears to work fine for starting the computer, I only seem to have this problem following this specific sequence.

Edit2: Tried a different keyboard, was able to get into bios by hitting DEL that way.

Okay, now to answer the original question:
MB: MEG Z590 GODLIKE MS-7D03
BIOS VEr: E7D031MS.A30
 

citay

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Oh snap, it's the GODLIKE? How can you not know you have the GODLIKE? 😄

Yeah, that board has it all.

Screenshot 2021-12-05 at 20-18-24 E7D03v1 0 pdf.png


So according to that, you're doing it right.

In the graphics card where the DP cable is originating from, what does the driver say there? Does it detect anything at the end of the cable?
 

Jancarius

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I did know I had the Godlike, I didn't realize there were other variations of the Z590 to specify it apart from.

Anyway, I'm looking at the driver in the Device Manager, how do I tell if it's detecting the cable?
 

citay

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Open the driver UI itself. What graphics card do you have?
 

Jancarius

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NVIDIA 3090. Do you mean the NVIDIA control panel, or the actual device manager/driver? If the latter, I'm not sure what part of the UI you're referring to.
 

citay

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The NVIDIA control panel, yeah. Somewhere under Display in there it should show what's attached.
 

Jancarius

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So under Display I have:
* Change Resolution
* Adust Desktop Color Settings\
* Rotate Display
* View HDCP Status
* Set up Digital Audio
* Adjust DEsktop Size and Position
* Set up multiple displays

Under some of the menus I can see port references, but nothign indicating the DP-MiniDP port itself is in use that I can see.
 

citay

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Under "Change Resolution" it should list whatever is connected, like so:

 

Jancarius

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Ah yeah. It only shows the HDMI port that I'm using for diagnostic connections. How can I verify whether the MiniDP ports on the motherboard are functioning vs the cable itself?
Edit: Clarification: The hub isn't currently plugged in as I sent for a replacement one from Amazon, only the dport to mini cable is connected, rather than the whole chain.
 

citay

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I think you need the whole chain connected. Right now it's basically just an extension of the DP, without anything "real" at the end of it.
 

Jancarius

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New hub arrived. https://www.amazon.com/dp/B073JDZGKK?psc=1&ref=ppx_yo2_dt_b_product_details The hub in question.

The actual display port itself will work for whichever monitor I plug into it, but the Display port to USB-C/TB monitor so far does not. I tested the cable separately on a laptop.

Edit: After some more testing, whichever monitor I plug into the hub first works. I see two possibilities - Either I need a second DP to miniDP connection to the mobo for a second monitor, or it's a limitation of the TB contorller
 
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