Display Port Stops Working After Connecting Video Capture Card

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
1

Hello,

I have been trying to stream the display of my Jetson Orin Nano to my iPad, to use as a portable monitor, since SSH and X11 forwarding introduces significant lag. I purchased a video capture card, which works effectively for streaming my laptop, and a raspberry pi display to my iPad. However, after plugging it in to my Jetson, the DP port seems to have died - even after removing the capture card the port stays constantly in a ‘disconnected’ state. I’ve power cycled, swapped in and out different cables, and reflashed, but no luck yet. Is there anything else that could be causing this other than a fried port?

Here’s an output log of some of the stuff I tried:

===== NVIDIA Jetson Display Debug Script =====

[INFO] Jetson model and L4T version:

R36 (release), REVISION: 4.4, GCID: 41062509, BOARD: generic, EABI: aarch64, DATE: Mon Jun 16 16:07:13 UTC 2025

Linux ubuntu 5.15.148-tegra #1 SMP PREEMPT Mon Jun 16 08:24:48 PDT 2025 aarch64 aarch64 aarch64 GNU/Linux

[INFO] DRM devices:
card0 card1 card1-DP-1 renderD128 renderD129 version

[INFO] DisplayPort status:
status: disconnected

[INFO] HDMI status:
cat: ‘/sys/class/drm/HDMI/status’: No such file or directory
status:

[INFO] xrandr --listproviders:
Providers: number : 0

[INFO] xrandr --query:
Screen 0: minimum 32 x 32, current 1920 x 1080, maximum 32768 x 32768
VNC-0 connected 1920x1080+0+0 0mm x 0mm
1920x1080 60.00*+
1920x1200 60.00
1600x1200 60.00
1680x1050 60.00
1400x1050 60.00
1360x768 60.00
1280x1024 60.00
1280x960 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
800x600 60.00
640x480 60.00

[INFO] GPU/Display-related kernel modules:
nvidia_drm 94208 1
nvidia_modeset 1261568 5 nvidia_drm
snd_soc_tegra210_admaif 118784 1
snd_soc_tegra210_mixer 45056 1
snd_soc_tegra_pcm 16384 1 snd_soc_tegra210_admaif
snd_soc_tegra186_asrc 36864 1
snd_soc_tegra210_afc 20480 6
snd_soc_tegra210_ope 32768 1
snd_soc_tegra210_mvc 20480 2
snd_soc_tegra210_adx 28672 4
snd_soc_tegra210_dmic 20480 3
snd_soc_tegra186_arad 24576 2 snd_soc_tegra186_asrc
snd_soc_tegra186_dspk 20480 2
snd_soc_tegra210_sfc 57344 4
snd_soc_tegra210_amx 32768 4
snd_soc_tegra210_i2s 24576 4
tegra210_adma 24576 0
snd_soc_tegra210_ahub 1257472 3 snd_soc_tegra210_ope,snd_soc_tegra210_sfc
snd_soc_tegra_machine_driver 16384 0
snd_soc_tegra_utils 28672 2 snd_soc_tegra210_admaif,snd_soc_tegra_machine_driver
snd_soc_simple_card_utils 28672 1 snd_soc_tegra_utils
tegra_cactmon_mc_all 16384 0
tegra_aconnect 16384 0
snd_hda_tegra 20480 0
tegra234_aon 49152 1
snd_hda_codec 126976 2 snd_hda_codec_hdmi,snd_hda_tegra
pwm_tegra_tachometer 16384 0
snd_hda_core 94208 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_tegra
tegra_pcie_dma_test 20480 0
tegra_pcie_edma 20480 1 tegra_pcie_dma_test
spi_tegra114 28672 0
tegra234_oc_event 16384 0
tegra_camera 217088 3 nvhost_isp5,nvhost_nvcsi_t194,nvhost_vi5
v4l2_dv_timings 36864 1 tegra_camera
nvhost_nvcsi 24576 1 tegra_camera
tegra_camera_platform 24576 4 nvhost_isp5,nvhost_nvcsi_t194,tegra_camera,nvhost_vi5
capture_ivc 28672 1 tegra_camera
tegra_dce 98304 2 nvidia
tegra_camera_rtcpu 176128 2 capture_ivc,tegra_camera
ivc_bus 24576 2 capture_ivc,tegra_camera_rtcpu
hsp_mailbox_client 20480 2 ivc_bus,tegra_camera_rtcpu
v4l2_fwnode 20480 1 tegra_camera
v4l2_async 20480 2 v4l2_fwnode,tegra_camera
videobuf2_dma_contig 24576 1 tegra_camera
videobuf2_v4l2 28672 1 tegra_camera
videobuf2_common 61440 4 videobuf2_dma_contig,videobuf2_v4l2,tegra_camera,videobuf2_memops
videodev 249856 4 v4l2_async,videobuf2_v4l2,tegra_camera,videobuf2_common
mc 57344 4 videodev,videobuf2_v4l2,tegra_camera,videobuf2_common
host1x_nvhost 40960 8 nvhost_isp5,nvhost_nvcsi_t194,nvidia,tegra_camera,nvhost_capture,nvhost_nvcsi,nvhost_vi5,nvidia_modeset
tegra_drm 344064 10
tegra_wmark 16384 0
nvhwpm 106496 2 mc_hwpm,tegra_drm
cec 53248 1 tegra_drm
drm_kms_helper 278528 3 tegra_drm,nvidia_drm
nvgpu 2654208 19
host1x 180224 6 host1x_nvhost,host1x_fence,nvgpu,tegra_drm,nvidia_drm,nvidia_modeset
mc_utils 16384 3 nvidia,nvgpu,tegra_camera_platform
nvmap 204800 81 nvgpu
drm 602112 16 drm_kms_helper,nvidia,tegra_drm,nvidia_drm
pwm_tegra 20480 1
tegra_bpmp_thermal 16384 0
tegra_xudc 45056 0
phy_tegra194_p2u 16384 9
pcie_tegra194 40960 0

[INFO] dmesg display-related lines:
dmesg: read kernel buffer failed: Operation not permitted

[INFO] PCI and device tree entries related to display:
0001:00:00.0 PCI bridge: NVIDIA Corporation Device 229e (rev a1)
0004:00:00.0 PCI bridge: NVIDIA Corporation Device 229c (rev a1)
0008:00:00.0 PCI bridge: NVIDIA Corporation Device 229c (rev a1)
/proc/device-tree/display@13800000
/proc/device-tree/display@13800000/nvdisplay-niso
/proc/device-tree/symbols/display

===== End of Report =====

Thank you!

Sam

4

I will suggest you log in via serial console or ssh, and monitor “dmesg --follow”. Then plug in the monitor (with the capture card already removed). Note which log lines occur as a result of the plug-in of the DisplayPort, and post those here.

With that monitor still plugged in you might want to check if there is a log file with a timestamp which applies to that monitor plug-in (don’t unplug it):
ls -ltr /var/log/Xorg.*.log | tail -n 1

If that log shows up, and if its timestamp seems to be from roughly the time you just plugged in the cable, then you can also attach a copy of that file to the forum (ssh can copy the file via the scp command, or you can start logging on a serial console and “cat” the filename to get a log to the host PC).

6

Hi,
For information, Is the video capture card connected to PCIe interface on Orin Nano developer kit? Which interface?

7

There is no update from you for a period, assuming this is not an issue anymore.
Hence, we are closing this topic. If need further support, please open a new one.
Thanks ~1021

xrandr --query:
Screen 0: minimum 32 x 32, current 1920 x 1080, maximum 32768 x 32768
VNC-0 connected 1920x1080+0+0 0mm x 0mm

The xrandr result gives out a display from VNC but not physical monitor.

Did installing this capture card change anything inside of xorg conf?