The Jetson Orin Nano Super Devkit comes with a display output consisting of 1x DisplayPort 1.2 (+MST) connector. Now I want to mount an Orin Nx 16GB on the carrier board of this devkit. However, it is absolutely essential to me that the carrier board supports the Orin NX’s 1x 8K30 multi-mode DP 1.4a (+MST)/eDP 1.4a/HDMI 2.1 display output (e.g., signal integrity).
Can an Orin NX 16GB fully utilize its DisplayPort capabilities on a carrier board from the Orin Nano Super Devkit?
For an Orin NX 16GB on the Jetson Orin Nano Super Developer Kit carrier, the answer is no. The Orin Nano Developer Kit carrier can be used to power, test, and develop with Jetson Orin NX modules, but it should not be treated as a validated DP 1.4a / 8K30 carrier for Orin NX.
The relevant support boundary is:
Module capability
The Jetson Orin NX Series module data sheet lists DP 1.4a/eDP 1.4a/HDMI 2.1 capability for the module.
Devkit carrier and Jetson Linux support
The Jetson Orin Nano Developer Kit has a single DisplayPort output connector. However, the Jetson Linux Developer Guide lists DP 4K120 / 8K30 HBR3 as supported only on Jetson AGX Orin, and not supported for Jetson Orin NX/Nano. The same DisplayPort section also notes that eDP is not supported on Jetson Orin.
Recommendation: If DP 1.4a / 8K30 operation is required, please use a carrier board design that is validated for Orin NX DP 1.4a/HBR3 signal integrity and for the required Jetson Linux display mode. The Orin Nano Developer Kit carrier should not be used as a DP 1.4a / 8K30 reference for Orin NX.
What I don’t understand is why the specs page clearly states that the Orin Nx supports 8k30. I know this used to be different, but they’ve changed it in the specs overview.
Since it’s crucial for our project that an NX can handle 2x 4k60 over DP MST, can you please clarify this?
Thanks for pointing this out. I understand the confusion here.
Note: You are correct that the current public documentation is not clear enough here. The Jetson Orin specs overview lists Orin NX with 1x 8K30 multi-mode DP 1.4a (+MST)/eDP 1.4a/HDMI 2.1, but the Jetson Linux Developer Guide support matrix lists the corresponding HBR3 mode, DP 4K at 120 Hz or 8K at 30 Hz, as supported only on Jetson AGX Orin, not supported for Jetson Orin NX/Nano. We will feed this back as a documentation clarification item so the module capability and Jetson Linux supported configurations are clearer.
For an Orin NX 16GB on the Jetson Orin Nano Super Developer Kit carrier, I cannot conclude from the public documentation that this is electrically impossible. However, please do not treat this carrier as a validated DP 1.4a / HBR3 reference platform for Orin NX 8K30 or 2x 4K60 over DP MST.
The support boundary is:
Module capability
The Jetson Orin specs overview lists Orin NX with 1x 8K30 multi-mode DP 1.4a (+MST)/eDP 1.4a/HDMI 2.1. This is the module-level display capability.
Nano Developer Kit carrier
The Jetson Orin Nano Developer Kit carrier can be used to power, test, and develop with Jetson Orin NX modules, and it has a single DisplayPort output connector. However, the carrier documentation does not validate DP 1.4a / HBR3 operation for Orin NX 8K30 or 2x 4K60 MST.
Jetson Linux support
For software support, please refer to the Jetson Linux Developer Guide. In the Jetson Orin Series DisplayPort table, DP 4K at 120 Hz or 8K at 30 Hz is listed as HBR3 and is marked as supported only on Jetson AGX Orin, not supported for Jetson Orin NX/Nano. The same section also notes that eDP is not supported on Jetson Orin.
For 2x 4K60 over DP MST, the DisplayPort table lists DP MST support generally, but it does not list 2x 4K60 over MST as a supported Orin NX/Nano mode. Since this requirement depends on the high-bandwidth DP 1.4a / HBR3 use case, this may be possible only as an unvalidated configuration, and NVIDIA cannot guarantee or support it as an officially supported Orin NX/Nano configuration.
Recommendation: If your project requires 2x 4K60 over DP MST, please use a carrier board design and software configuration that are validated for Orin NX DP 1.4a / HBR3 signal integrity and for the required Jetson Linux display mode. The Orin Nano Super Developer Kit carrier should not be used to commit this requirement unless you perform your own validation and accept that it is outside the documented Jetson Linux support matrix.
Thanks for the detailed response. I now understand that I shouldn’t use the Orin Nano Super Devkit for validating 8k30 (2x 4k60 MST) because it doesn’t meet the specifications.
Since we’ll be designing our own carrier board later anyway, that’s not a big deal.
For me, the most important thing right now is whether it’s possible to achieve an 8k30 (2x4k60 MST) DP output on an Orin NX.
As I understand it, the Orin NX hardware is capable of this. However, regarding the software, I’m not sure if it’s possible or not. If it’s possible on the AGX, shouldn’t it also be possible on the NX from a software perspective?
We will internally discuss the Orin NX documentation mismatch between the module-level capability listed in the specs overview and the Jetson Linux supported configurations.
For the software question: AGX Orin support does not automatically mean Orin NX support. They are different Jetson Orin hardware platforms, and the corresponding Jetson Linux software support scope can also be different.
In the current Jetson Linux support matrix, HBR3 DP 4K at 120 Hz or 8K at 30 Hz is listed as supported only on Jetson AGX Orin, and not supported for Jetson Orin NX/Nano. So at this time, 8K30 / 2x 4K60 MST should not be treated as a supported Jetson Linux configuration on Orin NX.
Thank you very much for the quick responses. We are currently in the preliminary study phase of the project, so it would be great if you could clarify these questions internally:
Is the Orin NX hardware capable of outputting 2x4K60 via MST?
If the answer to question 1 is “Yes”: Does the software support this feature? If the software does not support this, how much effort would it take to adapt it?
This question is for you: By when can I expect an answer to the first two questions? I don’t want to put any pressure on you, but we’d like to move from the pre-study phase to the proof of concept phase as quickly as possible. That’s why it’s important for us to know this.
For this configuration, please refer to the Jetson Linux Developer Guide as the software support scope.
In the current Jetson Linux DisplayPort feature table, HBR3 DP 4K at 120 Hz or 8K at 30 Hz is listed as supported on Jetson AGX Orin, but not supported on Jetson Orin NX/Nano. Therefore, 8K30 or 2x 4K60 over DP MST should not be planned as a supported Jetson Linux configuration on Orin NX at this time.
We understand the Orin NX specs overview and the Jetson Linux software support table are not clear/aligned enough. We will follow up internally to clarify and align the public documentation between module-level capability and software-supported configurations.
Yeah you told me that now several time, but it sounds like youre also not completely sure if it works with the Software or not. Can you please check what effort is needed to make it work on Orin Nx? You wrote it in the specs overview and we focused on Orin NX because of that so at least you could check if its possible with a software patch or not.
Hi,
8K30 support is limited by max clock availability on Orin NX and Orin Nano. This is a hardware constraint. Display spec in the page is not correct and we will make correction.
The Orin NX has the following DP interfaces:
DP1 (HDMI): Pins: 63, 65, 69, 71, 75, 77, 81, 83,
DP0 (USBSS1/USBSS2): Pins: 39, 41, 45, 47, 51, 53, 57, 59, 88, 90, 92
Can these interfaces be used simultaneously, or are they internally multiplexed and routed to the same hardware block? Is 2 DP out supported if the USBSS1 and USBSS2 lanes are not needed?
No. On Jetson Orin NX, these pins cannot be used as two simultaneous physical DisplayPort outputs.
The pin names can be confusing:
DP1
The DP1 transmit lanes on pins 63–83, together with the DP1 AUX and HPD pins, form the module’s single native DP/HDMI display interface.
Pins named DP0_TXD*
On Jetson Orin NX, pins 39–59 are assigned to USB 3.2 ports 1 and 2. They do not expose a second DisplayPort interface, even when USBSS1 and USBSS2 are unused.
The Jetson Orin NX Series and Jetson Orin Nano Series Product Design Guide states that only one display interface is available. Multiple monitors must use MST through that single DP interface, within the supported display-mode limits.
Both displays are recognized separately and appear as 3840x2160@60 when I run sudo modetest -M nvidia-drm -c. I’ve been running both simultaneously using the nvidia-drm driver with different frame rates, and it looks to me like this is working. Can you confirm this?
