**Hello Im Luciano from Apelie Robotics. I've been using the camera D pro for a Ros2 project for more than a year. So far we have worked with ten of them, which worked perfectly.
However, this week I bought two more in the USA and they have this problems:
When I try to use with my system that uses deptai-ros (luxonis/depthai-ros), the camera is not found, and reports (neither of both, when I tried them separately):
" RuntimeError: Failed to find device after booting, error message: X_LINK_DEVICE_NOT*FOUND"
*
Then I tried to run depthai_demo.py from depthai (luxonis/depthaitree/main) with the latest version, and the cameras still didn't work. This is what reported:

python3 depthai_demo.py**

Using depthai module from:  /home/apelie/.local/lib/python3.10/site-packages/depthai.cpython-310-x86_64-linux-gnu.so

Depthai version installed:  2.21.2.0

Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.

Setting up demo...

Available devices:

[0] 1944301051C6A02E00 [X_LINK_UNBOOTED]

USB Connection speed: UsbSpeed.SUPER

Disabling depth...

Disabling depth preview...

Disabling depthRaw preview...

Disabling left preview...

Disabling rectifiedLeft preview...

Disabling right preview...

Disabling rectifiedRight preview...

IR drivers found on OAK-D Pro: ['LM3644 on bus 2']

--> Go to the `Depth` tab to enable!

[1944301051C6A02E00] [1.2] [2.086] [ColorCamera(0)] [error] Camera not detected on socket: 0

Hi @LucianoPeretti
Could you try updating depthai to the latest (2.24.0.0) version and then running cam_test.py (it's inside depthai-python repo)?

Thanks,
Jaka

Now, I use depthai repo with the latest version (2.21.2.0) with ten old cameras, which worked perfecly, therefore when I use the new cameras, (with the same computer ), the cameras not found and depthai_demo.py report:
[1944301051C6A02E00] [1.2] [2.086] [ColorCamera(0)] [error] Camera not detected on socket: 0
Can I repair my problem with use of depthai-python repo?

Hi @LucianoPeretti
I'm just trying to see if it's a HW issue (likely not). Therefore making sure you are running the latest depthai version and testing each camera will help in understanding why the issue occurs.

Thanks,
Jaka

4 months later

No solutions from me, just confirmation that I am having the same problem with the latest batch of Oak-D Pro's we have received. We run 25 systems, all working perfectly. Yet none of the latest five systems we have just built, can find the device. Our platforms have remained the same (all of our systems are from images to maintain configuration control), so my only assumption is some change in the cameras.

    Hi MightyMaestro
    Could you open the device and give me the revision number on the PCB.Should be something like R7M3E7. Also the MXID.

    Thanks,
    Jaka

        Hi @jakaskerl

        Message from depthai-demo
        [19443010A1F39A2E00] [1.3.1] [7.647] [system] [error] Attempted to start Color camera - NOT detected!

        DepthAI version 2.17.1.0

          Found the calibration_reader.py script and found the board revision.

          Ok… The cameras that work have a revision of R6M2E6, and the cameras that don't work have a revision of R7M2E7.