I recently acquired an OAK-D CM4 device. However, I can only run the depthai-demo.py script when connected via VNC to the Raspberry Pi CM4. Whenever I attempt to run it through the DepthAI app on Windows, I encounter the "no DepthAI device found" error. I'm wondering if there is a solution to this issue.

@"jakaskerl"#p13044 Thanks @"jakaskerl"#1112 now it is working completely on headless configuration. Here are the steps I followed: 1. Removed HDMI cable 2. Removed `export DISPLAY=:0.0 `from .bashrc using` sudo nano ~/.bashrc` 3. Installed [xming X server](https://sourceforge.net/projects/xming/) 4. In PuTTY, I changed SSH setting -> X11 -> Enable X11 Forwarding [upl-image-preview url=https://discuss.luxonis.com/assets/files/2023-10-12/1697086128-270558-image.png] and on windows side set display for CMD, I followed following steps from this [guide](https://x410.dev/cookbook/built-in-ssh-x11-forwarding-in-powershell-or-windows-command-prompt/) 1. `set DISPLAY=127.0.0.1:0.0` 2. `ssh `**`-Y`**` `*``*`@`*``* [upl-image-preview url=https://discuss.luxonis.com/assets/files/2023-10-12/1697086555-170991-image.png] Thanks for the support!

Hi @"NickNikzad"#p9108 , Due to how the device is designed (VPU connected directly to CM4), it's not possible to connect to the VPU from your computer. So you always need to connect to the CM4 to access VPU, just like having RPi + OAK, you'd need to connect to RPi and then connect to OAK from RPi.

@"erik"#p9114 Thanks for your response. How about the **OAK-D CM4 PoE** camera model? Does it have a similar design and limitation in terms of the direct connection between VPU and CM4?

Hi @"NickNikzad"#p9116 , yes, the same applies. So you have to SSH into the CM4 and then access the VPU. See here: https://docs.luxonis.com/projects/hardware/en/latest/pages/DM2097.html#poe-for-rpi-not-oak

@"erik"#p9117 when I ssh into CM4 using -x tag and try to run any examples it gives opencv related errors. [upl-image-preview url=https://discuss.luxonis.com/assets/files/2023-10-05/1696497081-216347-image.png]

@"AnshumanFauzdar"#p12784 did you reflash the OS on the CM4? If so, it seems some libraries weren't correctly installed.

@"erik"#p12788 This example is working fine on CM4 itself, when I SSH through windows OS it shows the errors as mentioned in screenshot.

@"AnshumanFauzdar"#p12790 Does opencv work correctly (the imshow part) on your windows?

@"erik"#p12791 Yes on windows, opencv works correctly. I tried imshow example: [upl-image-preview url=https://discuss.luxonis.com/assets/files/2023-10-05/1696503234-782433-image.png] Error is this: [upl-image-preview url=https://discuss.luxonis.com/assets/files/2023-10-05/1696503414-309348-image.png]

Hi @"AnshumanFauzdar"#p12792 Not sure about Windows, but at least on MacOS the x11 is enabled using -X and not -x. Thanks, Jaka

OAK-D CM4

AnshumanFauzdar

jakaskerl should I remove the export display and also remove the HDMI cable and only ssh headless?

AnshumanFauzdar

jakaskerl Thanks @jakaskerl now it is working completely on headless configuration. Here are the steps I followed:

Removed HDMI cable
Removed export DISPLAY=:0.0from .bashrc usingsudo nano ~/.bashrc
Installed xming X server
In PuTTY, I changed SSH setting -> X11 -> Enable X11 Forwarding

and on windows side set display for CMD, I followed following steps from this guide

set DISPLAY=127.0.0.1:0.0
ssh-Y<your_user_id>@<server_address>

Thanks for the support!

AnshumanFauzdar

I am facing issue while replying on the posts while tagging someone.

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