# How to test DP MST mode output? **URL:** \ **Category:** Jetson AGX Orin\ **Tags:** dp-display\ **Created:** [June 28, 2022, 1:56am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988 "2022-06-28T01:56:31Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [June 28, 2022, 1:56am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/1 "2022-06-28T01:56:31Z")
How to test DP MST mode output? test path A → B → C A : ORIN EVK B: DisplayPort MST Hub > **[2-Port True 4K DisplayPort MST Hub - VS92DP, ATEN Video Splitters](https://www.aten.com/global/en/products/professional-audiovideo/video-splitters/vs92dp/)** > > Designed with a cost effective, yet advanced DisplayPort MST solution in mind, the ATEN VS92DP 2-Port True 4K DisplayPort MST Hub allows the high-defi nition video to be transmitted to two different locations without losing quality. Productivity is... C: DP 4K Display Is this test path correct? JetPack 5.0.1 change how to set the implementation? ---
**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\ **Post date:** [June 28, 2022, 3:14am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/3 "2022-06-28T03:14:38Z")
This looks correct. ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [June 28, 2022, 3:16am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/4 "2022-06-28T03:16:22Z")
Is there any modification required for JetPack 5.0.1?? ---
**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\ **Post date:** [June 28, 2022, 3:22am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/5 "2022-06-28T03:22:59Z")
You can also test with the DP monitor which claims they supported MST. ---
**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\ **Post date:** [June 28, 2022, 3:26am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/6 "2022-06-28T03:26:43Z")
No, I don’t think any modification is needed. We have other customers trying that before. Pure sdkmanager shall work. But since this is still preview version release, not sure if you would hit bug after some operations (blank/unblank). ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [July 12, 2022, 7:44am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/8 "2022-07-12T07:44:36Z")
I use DisplayPort MST Hub to test ORIN DP MST display, but no image… Use DisplayPort MST Hub to test PC output DP MST display but it can display… How can I check the status displayed by DP MST on ORIN? ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [July 13, 2022, 7:55am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/9 "2022-07-13T07:55:35Z")
[20220713\_DP\_plugin\_err.log](https://forums.developer.nvidia.com/uploads/short-url/gFbwhxbOJj9FCFYEpxuBMrB9PN3.log) (63.7 KB) I use DisplayPort MST Hub to test ORIN DP MST display, but can’t display… — plug in monitor ASUS PA238 ---- [508.257] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): connected [508.258] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): Internal DisplayPort [508.258] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): 2380.0 MHz maximum pixel clock [508.258] (–) NVIDIA(GPU-0): [508.265] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): connected [508.265] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): Internal DisplayPort [508.265] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): 2380.0 MHz maximum pixel clock [508.265] (–) NVIDIA(GPU-0): [508.267] (–) NVIDIA(GPU-0): DFP-1: disconnected [508.267] (–) NVIDIA(GPU-0): DFP-1: Internal TMDS [508.268] (–) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock [508.268] (–) NVIDIA(GPU-0): [508.311] (II) NVIDIA(0): Setting mode “DP-0: nvidia-auto-select @1920x1080 +0+0 {AllowGSYNC=Off, ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}” [508.502] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): connected [508.502] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): Internal DisplayPort [508.502] (–) NVIDIA(GPU-0): Ancor Communications Inc ASUS PA238 (DFP-0): 2380.0 MHz maximum pixel clock [508.502] (–) NVIDIA(GPU-0): [508.504] (–) NVIDIA(GPU-0): DFP-1: disconnected [508.504] (–) NVIDIA(GPU-0): DFP-1: Internal TMDS [508.504] (–) NVIDIA(GPU-0): — disconnected ASUS PA238 ---- — plug in DP HUB + monitor ASUS PA238 ---- [571.800] (–) NVIDIA(GPU-0): DFP-0: disconnected [571.800] (–) NVIDIA(GPU-0): DFP-0: Internal DisplayPort [571.800] (–) NVIDIA(GPU-0): DFP-0: 2380.0 MHz maximum pixel clock [571.800] (–) NVIDIA(GPU-0): [571.800] (–) NVIDIA(GPU-0): DFP-0: disconnected [571.800] (–) NVIDIA(GPU-0): DFP-0: Internal DisplayPort [571.800] (–) NVIDIA(GPU-0): DFP-0: 2380.0 MHz maximum pixel clock [571.800] (–) NVIDIA(GPU-0): [571.801] (–) NVIDIA(GPU-0): DFP-1: disconnected [571.801] (–) NVIDIA(GPU-0): DFP-1: Internal TMDS [571.801] (–) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock [571.801] (–) NVIDIA(GPU-0): [571.873] (II) NVIDIA(0): Setting mode “NULL” [571.963] (–) NVIDIA(GPU-0): DFP-0: disconnected [571.964] (–) NVIDIA(GPU-0): DFP-0: Internal DisplayPort [571.964] (–) NVIDIA(GPU-0): DFP-0: 2380.0 MHz maximum pixel clock [571.964] (–) NVIDIA(GPU-0): [571.964] (–) NVIDIA(GPU-0): DFP-1: disconnected [571.964] (–) NVIDIA(GPU-0): DFP-1: Internal TMDS [571.964] (–) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock but DP HUB + monitor ASUS PA238 connect to PC is ok … ---
**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\ **Post date:** [July 22, 2022, 2:55am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/11 "2022-07-22T02:55:19Z")
Hi, Per checked, our QA team is using Daisy chain with monitor supported MST. I used Dell display that supports Daisy Chaining MST. ![image](https://global.discourse-cdn.com/nvidia/original/3X/6/e/6e40a3774e6dac051bb7958b3a33ec5d1d03efd6.jpeg) ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [August 1, 2022, 9:25am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/13 "2022-08-01T09:25:34Z")
> [@WayneWWW](#): > > Dell display No screen that supports DP MST so can’t test … Use DP HUB but no response and cannot display see /var/log/Xorg.0.log no any message Any suggestions on how to debug the DP MST process?? ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [August 1, 2022, 9:35am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/14 "2022-08-01T09:35:42Z")
Can you tell me the model of the test screen? ---
**Author:** ![channinglan](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/channinglan/32/228568_2.png) [@channinglan](https://forums.developer.nvidia.com/u/channinglan)\ **Post date:** [August 3, 2022, 3:20am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/15 "2022-08-03T03:20:06Z")
Can you tell me the model of the test screen? It feels like there is a compatibility issue with DP MST… ---
**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\ **Post date:** [August 17, 2022, 3:20am UTC](https://forums.developer.nvidia.com/t/how-to-test-dp-mst-mode-output/218988/16 "2022-08-17T03:20:16Z")
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