Logitech C922 Webcam

shreyank amartya shreyankfbsd at gmail.com
Tue Sep 11 09:38:17 UTC 2018


What does usbconfig say about this device?

root at amd-sham:~ # usbconfig
ugen0.1: <0x1022 XHCI root HUB> at usbus0, cfg=0 md=HOST spd=SUPER
(5.0Gbps) pwr=SAVE (0mA)
ugen0.2: <CHICONY HP Basic USB Keyboard> at usbus0, cfg=0 md=HOST spd=LOW
(1.5Mbps) pwr=ON (100mA)
ugen0.3: <vendor 0x046d C922 Pro Stream Webcam> at usbus0, cfg=0 md=HOST
spd=HIGH (480Mbps) pwr=ON (500mA)
ugen0.4: <Logitech USB Optical Mouse> at usbus0, cfg=0 md=HOST spd=LOW
(1.5Mbps) pwr=ON (100mA)
ugen0.5: <ASIX Elec. Corp. AX88179> at usbus0, cfg=0 md=HOST spd=SUPER
(5.0Gbps) pwr=ON (124mA)

root at amd-sham:~ # lsusb
Bus /dev/usb Device /dev/ugen0.5: ID 0b95:1790 ASIX Electronics Corp.
AX88179 Gigabit Ethernet
Bus /dev/usb Device /dev/ugen0.4: ID 046d:c05a Logitech, Inc. M90/M100
Optical Mouse
Bus /dev/usb Device /dev/ugen0.3: ID 046d:085c Logitech, Inc. C922 Pro
Stream Webcam
Bus /dev/usb Device /dev/ugen0.2: ID 03f0:0024 Hewlett-Packard KU-0316
Keyboard
Bus /dev/usb Device /dev/ugen0.1: ID 0000:0000

Both seem to be detecting the camera. I can see traffic on USB dump but i
can't make sense of it yet.

On Tue, Sep 11, 2018 at 1:27 PM Hans Petter Selasky <hps at selasky.org> wrote:

> On 9/11/18 4:09 AM, shreyank amartya wrote:
> > I'm trying to use my Logitech C922 webcam with FreeBSD 11.2 installed on
> my
> > system. I've installed webcamd and it is able to create /dev/video0.
> > However, when I try viewing the video through pwcview or cheese, I get a
> > scattered feed at 800x600 resolution and the following error if I try a
> > higher resolution:
>
> What does usbconfig say about this device?
>
> "usbdump -i usbusX -f Y -s 65536" can capture the USB traffic and
> errors, if any.
>
> --HPS
>


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