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Vidioc_dqbuf Error 22


the kids want to stream our rat-cam for the world to see. TIS-Stefan commented Oct 23, 2014 I have an additional question: You use this code: ImageBuffer = snapFrame(); .. RasPi has it's own 5V 1A power supply. I changed io from IO_METHOD_MMAP to IO_METHOD_READ and the problem "VIDIOC_S_FMT error 22, Invalid argument" went away. have a peek at this web-site

If your have your config files under different users then the base install then you need to be careful with permissions and ownership. But before anything else : luvcview -h. If someone could point me to a resource where I can learn how to direct either my ethernet or my bttv to a different IRQ, I would be eternally grateful (modinfo For temporary solution I commented-out all occurences of errno_exit ("VIDIOC_DQBUF") in /opencv/otherlibs/highgui/cvcap_v4l.cpp and rebuild opencv.

Vidioc_dqbuf No Such Device

Are you running the code as in the example or did you make any changes? Tried with different resolutions, framerates, no luck. The source code sample you use is not event / callback based, so there is no event or callback for each incoming frame. Therefore, I would like to know, what guvcview says, when you show the DFK 42 as mono image with it.

I've applied the patch attached to this bug report, and I am getting the infinite loop condition that David mentioned. My AccountSearchMapsYouTubePlayNewsGmailDriveCalendarGoogle+TranslatePhotosMoreShoppingWalletFinanceDocsBooksBloggerContactsHangoutsEven more from GoogleSign inHidden fieldsSearch for groups or messages Log in / Register Ubuntulinux package Overview Code Bugs Blueprints Translations Answers bttv driver dies with VIDIOC_DQBUF error Bug #260251 Could it be the motherboard? I have test another camera (a low-end webcam) on embedded system with guvcview and it works, just to make sure if it is possible to capture images.

Download your favorite Linux distribution at LQ ISO. I've not personally tried building the current SVN source since it looks like some fairly serious changes have been made, but one of the guys I was working with did and This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. If not, would you like some help w/ re-phrasing your question, or providing more info.?

processing. Today tested 5 hours motion run, with no issues. I'm planning on trying the 2.6.28 kernel to see if it has any effect. The best thing is to run it in its default configuration.


I understand that I can withdraw my consent at any time. my review here You are currently viewing LQ as a guest. Vidioc_dqbuf No Such Device default: errno_exit ("VIDIOC_DQBUF"); } } for (i = 0; i < n_buffers; ++i) if (buf.m.userptr == (unsigned long) buffers[i].start && buf.length == buffers[i].length) break; assert (i < n_buffers); process_image ((void *) Vidioc_reqbufs It does not seem stable, but it is generally working.

See original description Tags: cft-2.6.27 kj-comment linux-2.6.27 Edit Tag help Stephan Fabel (sfabel) on 2008-08-22 description: updated Tim Howard (mexeled) wrote on 2008-08-28: #1 Same error here, using this card: After a proper test this morning we still had the program crash with the VIDIOC_DQBUF error. Subscribing... Main Menu LQ Calendar LQ Rules LQ Sitemap Site FAQ View New Posts View Latest Posts Zero Reply Threads LQ Wiki Most Wanted Jeremy's Blog Report LQ Bug Syndicate Latest V4l2_buffer

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: It seems like this stops it terminating, but it looks like it still locks up after a short time (accompanied by a 'bttv0: timeout: drop=15799 irq=1410075/32669932, risc=21789a2c, bits: HSYNC OFLOW' in It seems to be a kernel issue and the frustrating thing is - I've tried it with Debian Etch (i.e. Source Leann Ogasawara (leannogasawara) wrote on 2008-08-28: #2 The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release.

This seemed to avoid the issues highgui's v4l capture drivers (although in the current OpenCV package the python setters were broken and required us to hack together our own little python The Ubuntu Kernel Team's preferred policy is for all patches to be submitted and accepted into the upstream kernel before agreeing to merge them into the Ubuntu kernel. Tvtime doesn't work on my test machine (something about GATOS drivers), but xawtv shows the video data just fine (regardless of the network status).

One workaround was to re-start the motion process by adding the following line to the susers cron table:30 * * * * sudo pkill -9 motion; sleep 5; sudo motion;This works

Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. 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 and it fails you will know why. I don't think this should be the ultimate solution, because camera can't provide useable video.Is there any way to force an other driver (if there is)?

default: errno_exit ("VIDIOC_DQBUF"); } } assert (buf.index < n_buffers); process_image (buffers[buf.index].start); if (-1 == xioctl (fd, VIDIOC_QBUF, &buf)) errno_exit ("VIDIOC_QBUF"); break; case IO_METHOD_USERPTR: CLEAR (buf); buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; buf.memory = V4L2_MEMORY_USERPTR; You seem to have CSS turned off. TIS-Stefan commented Jan 27, 2015 Issue closed, since there was no answer anymore. I might try copying some of the stuff from the GStreamer code to see if that's what prevents GStreamer suffering the same problems.

I checked capturing video of a webcam using guvcview and it didn't any this problem. 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 Run luvcview -h to know its options. I will try again tomorrow with that information.

But after more examination, I realized that the actual frame rate which I can get images from the camera is the configured frame rate divided by factor of 2.5. Thread Tools Search this Thread Display Modes #1 20th January 2009, 06:30 AM martinellison Offline Registered User Join Date: Jun 2007 Posts: 28 webcam (v4l2) does not work Whilst at least prevented the EIO from crashing OpenCV, it was still accompanied by kernel warnings ("bttv0: timeout") and a drop in frame rate as it was re-buffered. However, I still got the same error as always before.

Then it appears it freezes. As root, start video loopback driver with: # modprobe vloopback pipes=1 Once I run that modprobe: [19334.834919] vloopback: Video4linux loopback driver v1.1.5 [19334.834919] vloopback: Loopback 0 registered, input: video2, output: video1 nickaein commented Aug 1, 2014 @TIS-Edgar: Thanks Edgar. It's not exactly clear from the V4L2 spec what the proper response should be.

Webcam loads and runs fine for a minute or 2. Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Distro is wheezy...very frustrating...I can't provide logs...i am on an iPad and can't figure out how to cut and paste from vSSH app....also very frustrating....Bill Posts: 42Joined: Sat Sep 22, 2012 I pushed it up to 1024x768.

Could you tell me what distribution you use and what kind of hardware(amd64/arm; desktop/embedded)? Terms Privacy Security Status Help You can't perform that action at this time. You signed out in another tab or window. TIS-Stefan closed this Jan 27, 2015 mattikra referenced this issue Jun 4, 2016 Open tcamsrc fails with bayer output #67 Sign up for free to join this conversation on GitHub.