[SOLVED] Logitech C922 PRO Issues with Ubuntu 21.04

liuyq

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MODERATOR'S NOTE: The below Posts were moved from another old Thread and the first Poster given credit for this new Thread. Wizard

And if it comes to getting a new webcam - as long as it is UVC compatible - it should work under Linux.

I recently got myself a Logitech c922 pro-stream web cam. Which has built in microphones. It works flawlessly for me in Debian 10 for live-streaming, video chat and photo applications. So I can definitely recommend one of those!
Hi, JasKinasis

I have the C922 Pro here too, but it does not work well with my ubuntu21.04

sometimes it could be recognized by the os, but for most time it could not be recognized with message in dmesg like this, not sure if you have any idea what's the problem there.
I suspect that the webcam needs more power to start, and my laptop or the usb hub could not supply that much.
but I don't know how to confirm that, and when I use it with one usb hub with external power cable plugged in, it could not work stably too.

the MaxPower is 500mA from the output of the "lsusb -v" command when it works

The following is the dmesg log for reference:
[ 2011.528036] usb 1-1.2.1.2: New USB device found, idVendor=046d, idProduct=085c, bcdDevice= 0.16
[ 2011.528049] usb 1-1.2.1.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1
[ 2011.528054] usb 1-1.2.1.2: Product: C922 Pro Stream Webcam
[ 2011.528057] usb 1-1.2.1.2: SerialNumber: 9C4B42DF
[ 2011.528583] uvcvideo: Found UVC 1.00 device C922 Pro Stream Webcam (046d:085c)
[ 2011.531776] input: C922 Pro Stream Webcam as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1.2/1-1.2.1.2:1.0/input/input26
[ 2025.889348] usb 1-1.2.1.2: reset high-speed USB device number 31 using ehci-pci
[ 2026.585309] usb 1-1.2.1.2: device descriptor read/64, error -71
[ 2030.133121] usb 1-1.2.1.2: reset high-speed USB device number 31 using ehci-pci
[ 2030.773079] usb 1-1.2.1.2: device descriptor read/64, error -71
[ 2031.255664] uvcvideo: Failed to submit URB 0 (-28).
[ 2518.329498] guvcview[8681]: segfault at 1c9 ip 00005567f4b5e869 sp 00007ffd4647d5c0 error 4 in guvcview[5567f4b4d000+1a000]
[ 2518.329525] Code: 24 3c 8b 35 41 16 01 00 4c 89 7c 24 08 48 89 44 24 40 48 c1 e3 06 85 f6 0f 8f 23 15 00 00 48 01 c3 48 8b 44 24 08 48 03 43 38 <8b> 48 18 85 c9 0f 8e 5c 14 00 00 c7 44 24 20 00 00 00 00 45 31 ff
[ 2615.286263] guvcview[8844]: segfault at 18 ip 00007f002f8abc20 sp 00007f001732a260 error 4 in libavcodec.so.58.91.100[7f002f38c000+9db000]
[ 2615.286291] Code: 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 55 53 48 89 f3 48 83 ec 18 4c 8b 06 64 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 <8b> 47 18 4c 89 46 08 8d 90 6a ff ff ff 83 fa 01 76 07 3d a6 00 00
[ 2650.141983] guvcview[8901]: segfault at 1c9 ip 000055cc0a6eb869 sp 00007ffdb88e3890 error 4 in guvcview[55cc0a6da000+1a000]
[ 2650.141995] Code: 24 3c 8b 35 41 16 01 00 4c 89 7c 24 08 48 89 44 24 40 48 c1 e3 06 85 f6 0f 8f 23 15 00 00 48 01 c3 48 8b 44 24 08 48 03 43 38 <8b> 48 18 85 c9 0f 8e 5c 14 00 00 c7 44 24 20 00 00 00 00 45 31 ff
[ 2668.065053] guvcview[8939]: segfault at 1c9 ip 000055f81185b869 sp 00007ffe49ba22f0 error 4 in guvcview[55f81184a000+1a000]
[ 2668.065082] Code: 24 3c 8b 35 41 16 01 00 4c 89 7c 24 08 48 89 44 24 40 48 c1 e3 06 85 f6 0f 8f 23 15 00 00 48 01 c3 48 8b 44 24 08 48 03 43 38 <8b> 48 18 85 c9 0f 8e 5c 14 00 00 c7 44 24 20 00 00 00 00 45 31 ff
[ 2672.433900] usb 1-1.2.1.2: USB disconnect, device number 31
[ 2677.040997] usb 1-1.2.1.2: new full-speed USB device number 32 using ehci-pci
[ 2677.148993] usb 1-1.2.1.2: device descriptor read/64, error -32
[ 2677.368980] usb 1-1.2.1.2: device descriptor read/64, error -32
[ 2677.580979] usb 1-1.2.1.2: new full-speed USB device number 33 using ehci-pci
[ 2677.689026] usb 1-1.2.1.2: device descriptor read/64, error -32
[ 2677.908995] usb 1-1.2.1.2: device descriptor read/64, error -32
[ 2678.017331] usb 1-1.2.1-port2: attempt power cycle
[ 2678.668937] usb 1-1.2.1.2: new full-speed USB device number 34 using ehci-pci
[ 2679.088966] usb 1-1.2.1.2: device not accepting address 34, error -32
[ 2679.192968] usb 1-1.2.1.2: new full-speed USB device number 35 using ehci-pci
[ 2679.612900] usb 1-1.2.1.2: device not accepting address 35, error -32
[ 2679.613292] usb 1-1.2.1-port2: unable to enumerate USB device
[ 3302.677429] usb 1-1.2.1.2: new full-speed USB device number 36 using ehci-pci
[ 3303.697447] usb 1-1.2.1.2: new high-speed USB device number 37 using ehci-pci
[ 3306.067571] usb 1-1.2.1.2: New USB device found, idVendor=046d, idProduct=085c, bcdDevice= 0.16
[ 3306.067586] usb 1-1.2.1.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1
[ 3306.067591] usb 1-1.2.1.2: Product: C922 Pro Stream Webcam
[ 3306.067594] usb 1-1.2.1.2: SerialNumber: 9C4B42DF
[ 3306.068243] uvcvideo: Found UVC 1.00 device C922 Pro Stream Webcam (046d:085c)
[ 3306.072668] input: C922 Pro Stream Webcam as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1.2/1-1.2.1.2:1.0/input/input27
[ 3306.837261] usb 1-1.2.1.2: 3:2: cannot set freq 24000 to ep 0x82
[ 3306.851817] usb 1-1.2.1.2: 3:3: cannot set freq 32000 to ep 0x82
[ 3306.920659] usb 1-1.2.1.2: 5:2: cannot get min/max values for control 2 (id 5)
[ 3306.922297] usb 1-1.2.1.2: USB disconnect, device number 37
[ 3307.221274] usb 1-1.2.1.2: new high-speed USB device number 38 using ehci-pci
[ 3309.587470] usb 1-1.2.1.2: New USB device found, idVendor=046d, idProduct=085c, bcdDevice= 0.16
[ 3309.587483] usb 1-1.2.1.2: New USB device strings: Mfr=0, Product=2, SerialNumber=1
[ 3309.587487] usb 1-1.2.1.2: Product: C922 Pro Stream Webcam
[ 3309.587491] usb 1-1.2.1.2: SerialNumber: 9C4B42DF
[ 3309.588106] uvcvideo: Found UVC 1.00 device C922 Pro Stream Webcam (046d:085c)
[ 3309.591847] input: C922 Pro Stream Webcam as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1.2/1-1.2.1.2:1.0/input/input28
[ 3320.462661] usb 1-1.2.1.2: USB disconnect, device number 38
[ 3320.612785] usb 1-1.2.1.2: new high-speed USB device number 39 using ehci-pci
[ 3325.772599] usb 1-1.2.1.2: device descriptor read/64, error -110
[ 3341.384048] usb 1-1.2.1.2: device descriptor read/64, error -110
[ 3341.600067] usb 1-1.2.1.2: new high-speed USB device number 40 using ehci-pci
[ 3346.767794] usb 1-1.2.1.2: device descriptor read/64, error -110
[ 3362.379309] usb 1-1.2.1.2: device descriptor read/64, error -110
[ 3362.487624] usb 1-1.2.1-port2: attempt power cycle
[ 3363.143243] usb 1-1.2.1.2: new high-speed USB device number 41 using ehci-pci
[ 3373.746894] usb 1-1.2.1.2: device not accepting address 41, error -110
[ 3373.850896] usb 1-1.2.1.2: new high-speed USB device number 42 using ehci-pci
[ 3384.498493] usb 1-1.2.1.2: device not accepting address 42, error -110
[ 3384.498804] usb 1-1.2.1-port2: unable to enumerate USB device
 


JasKinasis

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Your device HAS correctly been recognised. And it should work.
The log shows that guvcview crashed for some reason. And after the crash the device was unable to be enumerated. I honestly don't know if it's the camera that is faulty, or perhaps your USB hub/port is damaged in some way. IDK!

I use mine with the USB 3 ports on my laptop and it works flawlessly with Debian 10.
 
Last edited:
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liuyq

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Not sure why you've hijacked this thread. You should probably have created your own thread for this as it is a completely separate issue.

Your device HAS correctly been recognised. And it should work.
The log shows that guvcview crashed for some reason. And after the crash the device was unable to be enumerated. I honestly don't know if it's the camera that is faulty, or perhaps your USB hub/port is damaged in some way. IDK!

I use mine with the USB 3 ports on my laptop and it works flawlessly with Debian 10.

Sorry, I was redirected by the google search result and found you talked about the c922 pro webcam here, so replied here to see if you have any idea about my problem.

Thanks very much, JasKinasis! You reminded me, and I took that webcam to the technique support center today, it's a faulty one, they could not have it work neither.
With the new one they gave me, it works as expected now.

Thanks again for your kind reply!
 
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