opencv camera_error ai_generated true

RuntimeError: No RealSense devices were found

ID: opencv/realsense-device-not-found

Also available as: JSON · Markdown
78%Fix Rate
85%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
4 active — — —

Root Cause

Intel RealSense not detected. USB 2.0 port (D400 needs 3.0), missing udev rules, or kernel conflict.

generic

Workarounds

  1. 90% success Install from official APT repository with kernel patches 
    Follow github.com/IntelRealSense/librealsense/blob/master/doc/distribution_linux.md
  2. 88% success Check USB 3.0 connection via lsusb 
    lsusb -t | grep realsense  # speed should show 5000M not 480M
  3. 85% success Install udev rules for non-root access 
    sudo cp config/99-realsense-libusb.rules /etc/udev/rules.d/ && sudo udevadm control --reload-rules

Dead Ends

Common approaches that don't work:

  1. Install librealsense from pip only 80% fail

    pip pyrealsense2 is just the wrapper; you need udev rules and kernel patches from official repo

  2. Use USB 2.0 port for D400 series 85% fail

    D435/D455 require USB 3.0 for depth streaming. May enumerate on 2.0 but depth fails.

  3. Compile librealsense from source on Ubuntu LTS 65% fail

    Official APT repo with DKMS patches is easier and more reliable