Can't acces camera video streams on Ubuntu (V4L2_CORE - Resource temporarily unavailable) although it works on Win

[Dan010123]

Hi!
I have Ububtu server 20.04 on raspberry pi 4 8Gb
I use guvcview to view the video, logitech usb webcamera works fine

PS4EYE is set-up properly, camera firmware patched, lsusb shows
Bus 002 Device 003: ID 05a9:058b OmniVision Technologies, Inc. USB Camera-OV580

guvcview connects to the camera, but I have black or green images and a plenty of messages

V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable

I know that the camera is Ok as I successfully run it on Windows 10.

What could be wrong?
Thank you!

[Dan010123]

Well. Whatever I did, I haven't managed to launch it on 2 platforms - Rasberry pi4 (4GB) with RaspiOS and on Raspberry pi4 (8GB) Ubuntu 22.04.3 LTS.
Both resulted in guvcview with V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable
BTW I don't know if this could be the reason, but I tried several firmwares from this repository https://github.com/psxdev/luke_firmwares/tree/master - and all of them with v4l2-compliance command gave the same errors

v4l2-compliance

.....
Control ioctls (Input 0):
        test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
        test VIDIOC_QUERYCTRL: OK
                fail: v4l2-test-controls.cpp(489): s_ctrl returned an error (13)
        test VIDIOC_G/S_CTRL: FAIL
                fail: v4l2-test-controls.cpp(736): s_ext_ctrls returned an error (13)
        test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
        test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
        test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
        Standard Controls: 13 Private Controls: 0 ....

Total for uvcvideo device /dev/video0: 46, Succeeded: 44, Failed: 2, Warnings: 1

dmesg | grep -i -e cam -e video:

....
[108.285398] usbcore: registered new interface driver uvcvideo
[  841.006057] uvcvideo 2-1:1.1: Failed to resubmit video URB (-1).
[  854.045537] uvcvideo 2-1:1.1: Failed to resubmit video URB (-1).
[  854.052225] uvcvideo 2-1:1.1: Failed to resubmit video URB (-1).

So, access denied, and the same with sudo guvcview. I didn't find the solution for that.Wwith
With

sudo rmmod uvcvideo
sudo modprobe uvcvideo nodrop=1 timeout=5000

the output looks like this:

If anybody knows, how to solve this - I would appreciate the help :)
For the timebeing I give up...

Useful link also for those, who are interested (for Win) - https://www.psxhax.com/threads/ps4-ps5-cameras-windows-drivers-tutorial-for-2022-by-hackinside.11453/
Also a good one - (with google translator) - including ROS usage, helpful (I was going to try the camera for ROS2 SLAM).
https://haochihros.wordpress.com/2016/08/03/ps4eye-x-ros-ii-ubuntu-connection/

Regards!