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Vidioc_qbuf Error 22


Is this code specific to hardware? That is what is so puzzling about this. userptr method seems to work better, except that I now have an error 22 on the VIDIOC_QBUF ioctl Stéphane Reply Cancel Cancel Reply Suggest as Answer Use rich formatting TI For this you will have to contact us via [email protected]

Where did you find the capture example? The only success I've had is as described above. Posts: 1Joined: Sat Jan 05, 2013 7:55 pm by johnsonfamily38 » Mon Feb 04, 2013 10:14 pm Im running wheezy with motion 3.2.12 and a logitech Webcam C100 and had similar But before anything else : luvcview -h.


What happens, if you do not the image processing after snapFrame? Now I can capture images without any trouble problem. Prolly it takes some times more than 30 ms to actually put the frame content on the window, and give the window time to refresh, which actually causes the error.

Let's start with some basic information. TIS-Stefan commented Jul 25, 2014 Hello Nick, I have some questions for you: You wrote "I checked capturing video of a webcam using guvcview and it didn't any this problem." I USB-2.0 4-Port HUB
Bus 001 Device 006: ID 0bda:8189 Realtek Semiconductor Corp. TheImagingSource member TIS-Edgar commented Jul 22, 2014 Do you have a few more information?

It appears that the vpfe-capture driver isn't capturing pixels. Vidioc_dqbuf No Such Device When setting the frame rate to 30, I get a frame rate of around 12. Notices Welcome to, a friendly and active Linux Community. Here is the correct command and its output: guvcview --verbose --format=grey --size=1280x960 TheImagingSource member TIS-Edgar commented Jul 29, 2014 Hi, I am still unable to replicate this issue in any

On raspy I have to limit the size to 352x288 and the fps is limited automatically to 5 fps. If you are using the leopardboard, you need to modify board-dm355-leopard.c. After that if i have to write an application calling the functions in mt9m111.c in order to detect image sensor.Or if i have to make modification in other files.Even after doing You signed out in another tab or window.

Vidioc_dqbuf No Such Device

narsi1986 View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by narsi1986 03-27-2012, 08:17 AM #5 chasjh LQ Newbie Registered: Mar 2012 Posts: Using different resolutions does not help the problem. Vidioc_reqbufs Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started Vidioc_dqbuf Invalid Argument If you'd like to contribute content, let us know.

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At this point it boils down to possible hardware issues (faulty cable, not enough bandwidth) or kernel problems (you updated v4l2, but did you also update uvcvideo?) nickaein commented Aug 30, I used an oscilloscope to verify that the sensor is transmitting pixel data. For the DFK camera, guvcview fails when tries to capture images too, just like the example program. I have another webcam I will try when I get is also uvcvideo, but much, much older.

Content on this site may contain or be subject to specific guidelines or limitations on use. Give me some time and I will post more.My camera was working for a week or so and then a bug was introduced.This bug is in the kernel or a module.My MAYANK AGARWALAre you able to overcome your issue and get the captured image.

QuickCam Pro 9000
[email protected] ~ $
lsmod:Code: Select [email protected] ~ $ lsmod |grep video
uvcvideo 59742 1
videodev It has some easy to use API calls to v4l devices and there is a qt based example in the source to build a custom interface for video devices. At this point, I moved on to the v4l2 capture examples which give the errors described above. Running the example program for the second time: [ 93.404233] urb is deactive, this urb complete cancel! [ 93.404523] uvcvideo: uvc_dequeue_buffer is timeout!! [ 93.404627] urb is deactive, this urb complete Terms Privacy Security Status Help You can't perform that action at this time.

TheImagingSource member TIS-Edgar commented Jul 23, 2014 I thought you said in Ticket #11 that guvcview works correctly with the dfk42? Eventually motion crashes then more errors are noted.My log.Code: Select allSep 18 13:17:21 raspberrypi motion: [0] Processing thread 0 - config file /etc/motion/motion.conf
Sep 18 13:17:21 raspberrypi motion: [0] Motion 3.2.12 Warning: if you launch luvcview and for some reason you get a black screen, then the program window *can't* be closed by window manager. Join our community today!

limit y1,pb,pr] */ *EG = clamp (g ); *EB = clamp (b ); } static void process_image(const void * p) { int x,y; char *campixdata = (char *) p; int p1,p2,p3,p4,p5,p6; Running fully up to date Raspberrian Wheezy. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at It actually solves the problem.

Content on this site may contain or be subject to specific guidelines or limitations on use. Follow Us TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | (Mobile Version) TI is a global semiconductor design and manufacturing company. Once this occurs, the video streams perfectly with no more tearing. It helped me to setup motion with my super cheap chinese webcam.

For webcams using uvcvideo module, there's an intersting program to test your webcam. Thanks and Regards, Mayank Reply Cancel Cancel Reply Suggest as Answer Use rich formatting Expert 1910 points Mayank Agarwal Nov 15, 2011 4:33 AM Hi David, However it generates another problem. share|improve this answer edited Aug 1 at 9:50 Patrick B. 5,36531950 answered May 17 '12 at 18:37 Raulp 2,25353063 1 Thanks, I'll check it out! –Alex Ivasyuv Jun 5 '12

I am having trouble reproducing this error, so any info is welcome. I read somewhere that Linux does not support i2c slave mode. Do you have a Desktop you can test the camera on? I will try again tomorrow with that information.

How did you get the kernel to register the image during boot up.There are mt9m112/3 related .c and .h files in linux/media/video/drivers/davinci and also i can enable the mt9m112/3 drivers in Updating the drivers isn't really a possibility here, since I am using the Raspberry Pi and am rather new to its operationDuskFyre( 2013-03-25 15:55:19 -0500 )editIf you are using raspberry pi, No license, either express or implied, by estoppel or otherwise, is granted by TI.