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IDProjectCategoryView StatusLast Update
0007327Rocky-Linux-9v4l-utilspublic2024-06-21 21:18
ReporterHoward Lum Assigned ToLouis Abel  
PrioritynormalSeverityfeatureReproducibilityhave not tried
Status closedResolutionno change required 
OS Version9.4 
Summary0007327: v4l2 device not detected in Rocky Linux 9.4
DescriptionI have a v4l2 device that works fine with Rocky Linux 9.3. The node /dev/video0 is present when the device is connected. The dmesg output includes the following line.
[79694.820351] usb 2-1: Found UVC 1.10 device AVMATRIX USB Capture Video (04b4:4231)

With Rocky Linux 9.4, the video0 node does not appear under /dev. The dmesg output is missing the above line.

Did something change in Rocky Linux 9.4?
Steps To Reproducev4l2 device works with Rocky Linux 9.3
Fresh install of Rocky Linux 9.4 from an ISO. The v4l2 device stopped working (/dev/video0 not present)
Moved the v4l2 device to a different host running Rocky Linux 9.3 and the device works fine
TagsNo tags attached.


Louis Abel

Louis Abel

2024-06-21 03:29

administrator   ~0007591

>Did something change in Rocky Linux 9.4?

No recorded changes have happened with the uvc drivers since 9.3's development.

Please provide full dmesg output when you are connecting the device to the system. Please also attempt to use modprobe uvc and modprobe uvcvideo.
Howard Lum

Howard Lum

2024-06-21 21:05

reporter   ~0007624

Strange. I moved the v4l2 device back to the host running Rocky Linux 9.4 and now /dev/video0 shows up. Thanks for looking at this issue.

Issue History

Date Modified Username Field Change
2024-06-20 20:23 Howard Lum New Issue
2024-06-21 03:29 Louis Abel Assigned To => Louis Abel
2024-06-21 03:29 Louis Abel Status new => needinfo
2024-06-21 03:29 Louis Abel Note Added: 0007591
2024-06-21 21:05 Howard Lum Note Added: 0007624
2024-06-21 21:18 Louis Abel Status needinfo => closed
2024-06-21 21:18 Louis Abel Resolution open => no change required