Bug ID 1174625
Summary uvcvideo module doesn't create /dev/video devices
Classification openSUSE
Product openSUSE Tumbleweed
Version Current
Hardware x86-64
OS Linux
Status NEW
Severity Normal
Priority P5 - None
Component Kernel
Assignee kernel-bugs@opensuse.org
Reporter david@gloveraoki.net
QA Contact qa-bugs@suse.de
Found By ---
Blocker ---

Somewhere between kernel 5.7.7 and 5.7.9, uvcvideo stopped working.

dmesg for 5.7.7:
[   69.528291] usb 1-14: new high-speed USB device number 4 using xhci_hcd
[   69.679365] usb 1-14: New USB device found, idVendor=534d, idProduct=2109,
bcdDevice=21.00
[   69.679370] usb 1-14: New USB device strings: Mfr=1, Product=0,
SerialNumber=0
[   69.679373] usb 1-14: Manufacturer: MACROSILICON
[   69.681595] hid-generic 0003:534D:2109.0005: hiddev97,hidraw4: USB HID v1.10
Device [MACROSILICON] on usb-0000:00:14.0-14/input4
[   69.698468] mc: Linux media interface: v0.10
[   69.714359] videodev: Linux video capture interface: v2.00
[   69.722387] usbcore: registered new interface driver snd-usb-audio
[   69.730136] uvcvideo: Found UVC 1.00 device <unnamed> (534d:2109)
[   69.730785] uvcvideo 1-14:1.0: Entity type for entity Processing 2 was not
initialized!
[   69.730786] uvcvideo 1-14:1.0: Entity type for entity Camera 1 was not
initialized!
[   69.730831] usbcore: registered new interface driver uvcvideo
[   69.730831] USB Video Class driver (1.1.1)

dmesg for 5.7.9:
[   57.374607] usb 1-14: new high-speed USB device number 4 using xhci_hcd
[   57.525662] usb 1-14: New USB device found, idVendor=534d, idProduct=2109,
bcdDevice=21.00
[   57.525667] usb 1-14: New USB device strings: Mfr=1, Product=0,
SerialNumber=0
[   57.525670] usb 1-14: Manufacturer: MACROSILICON
[   57.527975] hid-generic 0003:534D:2109.0005: hiddev97,hidraw4: USB HID v1.10
Device [MACROSILICON] on usb-0000:00:14.0-14/input4
[   57.543400] mc: Linux media interface: v0.10
[   57.563578] videodev: Linux video capture interface: v2.00
[   57.565995] usbcore: registered new interface driver snd-usb-audio
[   57.581779] usbcore: registered new interface driver uvcvideo
[   57.581780] USB Video Class driver (1.1.1)

Under 5.7.9, the /dev/video devices are not created.

Booting from the earlier kernel, but changing nothing else, fixes the problem.


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