Having the same issues as well I posted this in reddit for help asking here also
Using black Wyzecam v2 with USB A/A 3.0 in Pi 3B 1.2
I'm getting this message in dmesg when OctoPrint boots..
Relevant messages
[ 2.391803] usb 1-1.4: new high-speed USB device number 5 using dwc_otg
[ 2.522523] usb 1-1.4: New USB device found, idVendor=18d1, idProduct=0001, bcdDevice= 3.10
[ 2.528543] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.531670] usb 1-1.4: Product: HD USB Camera
[ 2.534705] usb 1-1.4: Manufacturer: Ingenic Semiconductor CO., LTD.
[ 2.537711] usb 1-1.4: SerialNumber: Ucamera001
[ 9.582627] uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 2: -32 (exp. 1).
[ 9.602066] uvcvideo: Failed to query (GET_INFO) UVC control 9 on unit 2: -32 (exp. 1).
[ 9.608514] uvcvideo: Failed to query (GET_INFO) UVC control 4 on unit 2: -32 (exp. 1).
[ 9.614265] uvcvideo: Failed to query (GET_INFO) UVC control 11 on unit 2: -32 (exp. 1).
[ 9.615819] uvcvideo 1-1.4:1.0: Entity type for entity Processing 2 was not initialized!
[ 9.615838] uvcvideo 1-1.4:1.0: Entity type for entity Camera 1 was not initialized!
[ 9.616245] input: HD USB Camera: HD USB Camera as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/input/input0
[ 9.616717] usbcore: registered new interface driver uvcvideo
[ 9.616724] USB Video Class driver (1.1.1)
[ 9.670889] usb 1-1.4: Warning! Unlikely big volume range (=10240), cval->res is probably wrong.
[ 9.670908] usb 1-1.4: [5] FU [PCM Playback Volume] ch = 1, val = -7168/3072/1
[ 9.671683] usb 1-1.4: Warning! Unlikely big volume range (=3072), cval->res is probably wrong.
[ 9.671698] usb 1-1.4: [6] FU [Mic Capture Volume] ch = 1, val = -1536/1536/1
[ 9.923514] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[ 9.923555] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[ 9.931543] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[ 9.931579] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[ 9.938354] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[ 9.938393] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[ 13.347170] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -32 (exp. 2).
I've tested the WyzeCam in Windows 10 and it works fine as webcam so confident that the camera firmware flash is working. I've tried all the usb ports on the pi. Cam doesn't show up in lsusb. I've seen other posts with the above error but can't find the solution.
thanks in advance for any assistance.