DP MST issue

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

About ORIN using DP to display dual screens.
4k+4K not ok
4k + 2560x1440 ok
Do you have any suggestions ??

As show bellow

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image713×254 33.1 KB

ORIN DP → Dell U2723QE
4k60p ok

ORIN DP → Samsung S27A700NWC
4k60p ok

ORIN DP → Dell U2723QE → Samsung S27A700NWC
Dell U2723QE 4k60p ok Samsung S27A700NWC 4k60p not ok
Dell U2723QE 4k30p ok Samsung S27A700NWC 4k30p not ok
Dell U2723QE 4k60p ok Samsung S27A700NWC 2560x1440 ok

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image846×526 53 KB

3

Do you have any suggestions ??

5

What is the result of xrandr in the error case?

6

Dell U2723QE 4k30p ok Samsung S27A700NWC 4k30p not ok
unable to display

It is suspected that it is a cable problem. I have purchased 8K cables and retested.

1 Like
7

I switched to 8K cable connection

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image438×551 44.7 KB

but still only
Dell U2723QE 4k30p ok Samsung S27A700NWC 2560x1440

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image1477×1108 131 KB

if set to
Dell U2723QE 4k30p ok Samsung S27A700NWC 4k30p is not ok
Samsung S27A700NWC show no signal …
( ORIN directly connected to Samsung S27A700NWC can display 4k30p )

kernel message …
root@ubuntu:/home/uuser# dmesg
[ 875.337535] NVRM nvAssertFailedNoLog: Assertion failed: minRequiredIsoBandwidthKBPS <= clientBwValues[DISPLAY_ICC_BW_CLIENT_EXT].minRequiredIsoBandwidthKBPS @ kern_disp_0402.c:111

How to fix it ???

8

Hi,

Are you talking about

Dell U2723QE 4k30p + Samsung S27A700NWC 4k30p is NG

Dell U2723QE 4k30p ok Samsung S27A700NWC 2560x1440 → is OK

Did you test jp5.1?

9

yes

root@ubuntu:/etc# cat nv_tegra_release

R35 (release), REVISION: 2.1, GCID: 32413640, BOARD: t186ref, EABI: aarch64, DATE: Tue Jan 24 23:38:33 UTC 2023

root@ubuntu:/etc#

10

Do you have any suggestions?