UVC Complaint Camera not working

#1

Hi,

I’m using USB3 uvc complaint camera, which gives an error when i open with cheese and gstreamer

Error with Cheese
$ cheese -d /dev/video4
** (cheese:1076): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
libGL error: MESA-LOADER: failed to retrieve device information
libGL error: unable to load driver: rockchip_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: rockchip
libGL error: MESA-LOADER: failed to retrieve device information
libGL error: unable to load driver: rockchip_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: rockchip
(cheese:1076): Gtk-WARNING **: Theme parsing error: cheese.css:7:35: The style property GtkScrollbar:min-slider-length is deprecated and shouldn’t be used anymore. It will be removed in a future version
Using mplane plugin for capture
Using mplane plugin for capture
Segmentation fault

with gstreamer

gst-launch-1.0 v4l2src device=/dev/video4 ! video/x-raw,framerate=30/1,width=1280,height=960,format=YUY2 ! videoconvert ! xvimagesink
Setting pipeline to PAUSED …
Pipeline is live and does not need PREROLL …
Setting pipeline to PLAYING …
New clock: GstSystemClock
libv4l2: error turning on stream: Input/output error
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not read from resource.
Additional debug info:
gstv4l2bufferpool.c(1058): gst_v4l2_buffer_pool_poll (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
poll error 1: Input/output error (5)
Execution ended after 0:00:01.309585761
Setting pipeline to PAUSED …
Setting pipeline to READY …
libv4l2: error turning on stream: Input/output error
Setting pipeline to NULL …
Freeing pipeline …

#2

Hi,

Do you have the camera model? Normal UVC camera should work out of box. We can test here for you.

#3

Hi Jack,

Here the model

Bus 002 Device 003: ID 0ac8:3420 Z-Star Microelectronics Corp. Venus USB2.0 Camera

#4

Have you tried with a different camera to see if it works? I’d be inclined to try both a USB2 and a USB3 just to isolate as many variables as possible.

And are you sure its a USB3 camera? The identifications seem to say its a USB2. Check the color of the plastic inside the plug. USB2 = white, USB3 = blue. Typically. There are also a different number of contact pads in the connector. USB2 = 4, USB3 = 9.

#5

It’s USB 3 only the wire is in blue colour

#6

Camera is working in Jetson Nano & Raspberry Pi4 Devices

#7

That is not the test I suggested you to perform.

#8

Hi Ibdriodman,

I attached another cam from Logitech to USB2 port still not working, when I open cheese GUI system get freeze. But in a terminal, it throws below error

libGL error: MESA-LOADER: failed to retrieve device information
libGL error: unable to load driver: rockchip_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: rockchip
libGL error: MESA-LOADER: failed to retrieve device information
libGL error: unable to load driver: rockchip_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: rockchip

#9

Mesa is on the playback side. Can you try just a simple capture to file using ffmpeg?

#10

ffmpeg command working for logitech cam but not other.

Other cam is working with jetson & pi4 using the following fix
sudo modprobe -r uvcvideo
sudo modprobe uvcvideo nodrop=1 quirks=0x10

and above fix is not working in rockpi4
it says module uvcvideo is inbuilt

#11

Ok, so now we are starting to get somewhere.

Was the quirk actually necessary for the camera to work on those other 2 devices? If so, then the solution may be pretty easy – just add the kernel parameter “uvcvideo.quirks=0x10”. I doubt that the nodrop parameter was necessary, but you can add it as well in the same way.

Also, what kernel versions were running on the jetson and pi4?