With a Zed 2i, using latest SDK and firmware at the time of this writing, on Ubuntu 22.04, GPU Nvidia RTX A2000, using the Python API, I recently started receiving the following error every time I try to open the camera:
Mar 02 16:23:43 B2CON00024 kernel: uvcvideo 2-2.4.4:1.1: Non-zero status (-71) in video completion handler.
Mar 02 16:23:43 B2CON00024 kernel: uvcvideo 2-2.4.4:1.1: Non-zero status (-71) in video completion handler.
Mar 02 16:23:44 B2CON00024 kernel: uvcvideo 2-2.4.4:1.1: Non-zero status (-71) in video completion handler.
Mar 02 16:23:44 B2CON00024 kernel: uvcvideo 2-2.4.4:1.1: Non-zero status (-71) in video completion handler.
Mar 02 16:23:45 B2CON00024 kernel: uvcvideo 2-2.4.4:1.1: Non-zero status (-71) in video completion handler.
Mar 02 16:23:45 B2CON00024 circusd[1272]: [2025-03-02 16:23:45 UTC][ZED][WARNING] CAMERA NOT DETECTED in sl::ERROR_CODE sl::Camera::open(sl::InitParameters)
Occasionally, it also says this:
kernel: uvcvideo 2-2.4.4:1.1: Failed to resubmit video URB (-1).
That is, a series of uvcvideo errors followed by the open call failing to detect the camera.
Reloading the uvcvideo module did not help, nor did rebooting the system, nor does unplugging and replugging the camera. This error just started recently and is happening 100% of the time.
The camera itself is detected by the usb subsystem without issue:
[ 584.386051] usb 2-2.4.4: new SuperSpeed USB device number 28 using xhci_hcd
[ 584.406898] usb 2-2.4.4: New USB device found, idVendor=2b03, idProduct=f880, bcdDevice= 1.00
[ 584.406911] usb 2-2.4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=4
[ 584.406918] usb 2-2.4.4: Product: ZED 2i
[ 584.406924] usb 2-2.4.4: Manufacturer: Technologies, Inc.
[ 584.406929] usb 2-2.4.4: SerialNumber: OV0001
[ 584.410752] usb 2-2.4.4: Found UVC 1.10 device ZED 2i (2b03:f880)
[ 584.418668] input: ZED 2i: ZED 2i as /devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.4/2-2.4.4/2-2.4.4:1.0/input/input32
It’s just that attempting to open it produces these uvcvideo errors and then fails.
What is going on?