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Vidioc_dqbuf Input/output Error

David Coles (dcoles) wrote on 2009-02-09: #5 I've encountered this problem using the bttv driver card (Hauppauge (bt878)) and OpenCV. It's a larger camera so I'm pushing it with a powered USB hub. Note that I only use the terms frontend and backend here for clarity (separation of logic and driver-specific code). After a proper test this morning we still had the program crash with the VIDIOC_DQBUF error.

Thanks for all your helps on my problem. Unknown device 8089 I didn't use audio in any case. Main problem of patch is not implement that feature but make easy to users to understand what is and how to use it. -- AngelCarpintero - 20 Oct 2007 Motion 3.2.9 But It will take some time. have a peek at these guys

home [Download message RAW] On Mon, 5 Apr 2004 [email protected] wrote: > Then, I tried to start xawtv : /usr/bin/xawtv -remote > This is xawtv-3.72, running on Linux/i686 (2.4.25-veronique) I'm by Tim Howard (mexeled) wrote on 2009-05-04: #18 Still not working for me. To force core dump on Segmentation fault type : ulimit -c 1000000000000 Then run motion in the same shell you ran this command and will get a core file on Segmentation

Any reason it shouldn't? -- PerJonsson - 23 May 2005 No reason for that , so go ahead ! -- AngelCarpintero - 27 May 2005 Agree. -- KennethLavrsen - 27 May While this will provide the fastest scheduler response time, it is very wasteful of power and will generate heat that requires the air conditioning system to run (and waste more power). Linux - Networking 0 04-30-2008 03:20 PM aplay: pcm_write:1029: write error: Input/output error mimithebrain Linux - Software 2 12-04-2007 11:51 AM wpa_supplicant - ioctl[SIOCSIWAP]: Input/output error Irayo Linux - Wireless Networking David Coles (dcoles) wrote on 2009-02-12: #11 Ok.

One possibility is that your laptop does not supply enough power for both cameras. I've included the code I am using to capture and display frames, there are two techniques in the code - both of which do not work in 2.6.24 or 2.6.27-rc3. It is full of printf debug messages. net !

Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. Click Here to receive this Complete Guide absolutely free. Configure worked fine , but your compile ignores #ifdef HAVE_V4L2 i did a test with a fedora core 3 here , you can see the complete process : http://pastebin.ca/318610 -- AngelCarpintero Apologies if it has reached you inappropriately.] This bug was flagged as having a patch attached.

The goal for the Ubuntu kernel is to have little to no divergence from the upstream linux kernel source. Source However, there is a V4L2 _IN_ST_NO_COLOR flag possibly returned by the VIDIOC_ENUMINPUT ioctl. Search this Thread 07-22-2009, 03:37 PM #1 vedrus LQ Newbie Registered: Jul 2009 Posts: 1 Rep: xdtv: ioctl VIDIOC_DQBUF: error input/output Hi. In QBUF, if error try to set index in buf to lastindex + 1.

Could it be the motherboard? This is somewhat urgent; I'd appreciate a timely feedback. When I run xdtv from console the program crash with ioctl VIDIOC_DQBUF: error input/output not immediately but half minute after *** MIXER DEVICE TYPE = alsa. 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).

Anyone getting the samething? My only thoughts about it is that I now have read somewhere in the v4l2 documentation, can't find where just now, that the driver might not return the buffers in the Report a bug This report contains Public information Edit Everyone can see this information. Feb 5 14:03:28 atnavab12 kernel: usb 4-4: new high speed USB device using ehci_hcd and address 115 Feb 5 14:03:30 atnavab12 kernel: usb 4-4: device descriptor read/8, error -71 Feb 5

tags: added: kj-comment Stephan Fabel (sfabel) wrote on 2009-08-04: #21 I've been trying with - OpenCV 1.0.0 from source - OpenCV 1.1.0pre1 from source - OpenCV SVN (current as of today) Here is my patch v4l2_fix.diff for video2.c. It needs a major clean-up.

This allows for a future translation into a plugin architecture (see below), in that the vid_* functions are very small and only call other functions.

But on my target board, it doesn't have autosuspend in this folder. Geoff. -- video4linux-list mailing list Unsubscribe mailto:video4l[email protected]?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list [prev in list] [next in list] [prev in thread] [next in thread] Configure | About | News | Addalist | SponsoredbyKoreLogic 弁財天 Once I got rid of all v4l packages/configurations and with a powered USB hub and a fresh start everything works great now. You signed in with another tab or window.

No XvImage port available with yuyv format. I'm using a self-written library to access the camera in my computer vision software, and I have already accounted for the dreaded Logitech bug by disabling gain/exposure changes for now (or Using the MJPG is better than the other less compressed image formats.To get slightly better results I have tried storing the output from motion on the RAM disk. 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

I do not know where the problem is. I think it's fairly functional, but it needs integration with Motion, additional error checking and probably bug fixing and tuning -- PerJonsson - 02 Mar 2006 I've attached a patch that Anyway i have updated the current patch against svn , now it's not needed to use any special syntax in motion.conf to specify a V4L2 device, motion first try to use