Discussion:
[linux-uvc-devel] Logitech B990 (UVC) slow initialization, WebRTC problems
Daniel Pocock
2017-06-27 09:24:45 UTC
Permalink
(re-posted here because linux-uvc[10]'s list is a sourceforge list,
sourceforge recently bumped a lot of users off their lists by trying to
coerce them to agree to a "privacy" policy and the list archives appear
inactive[11])


Hi,

I have a Logitech B990 webcam, it is a UVC webcam:

ID 046d:0828 Logitech, Inc. HD Webcam B990


When I start guvcview, the webcam's blue lights flash for 5 - 7 seconds
and then a greenish picture appears.

If I go to the video tab in guvcview and change it from MJPG to YUYV or
H264 then the picture looks normal.

My WebRTC browser often tries to initialize the webcam but gives a
JavaScript error before it becomes ready. It doesn't appear to work
with cheese either.

I've attached the following details:


lsusb.log (from lsusb -v -d 046d:0828)

dmesg.out (uvcvideo traces)

guvcview.out (stdout/stderr from guvcview)


Is this a defect with the webcam or is it simply not supported? I
notice it is not in the list[1]. This was originally discussed on the
Jitsi Users list[2]

Regards,

Daniel


1. http://www.ideasonboard.org/uvc/#devices
2. http://lists.jitsi.org/pipermail/users/2017-June/013268.html

10. http://www.ideasonboard.org/uvc/
11.
https://sourceforge.net/p/linux-uvc/mailman/linux-uvc-devel/?viewmonth=201705
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