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** Changed in: linux (Ubuntu)
Status: Incomplete = Invalid
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https://bugs.launchpad.net/bugs/260251
Title:
bttv driver dies with VIDIOC_DQBUF error
Can we confirm whether this combination is now working on Maverick/Natty
(you may be able to test in a live CD environment). It seems that we
still do not know whether this is a library bug or an unusual access
method triggering a kernel bug.
** Changed in: linux (Ubuntu)
Status:
I haven't had any issues with OpenCV 2.1 under Maverick (as of today).
Workaround for me was to disable the ffmpeg support and use gstreamer
instead (as soon as that was stable enough).
Thanks,
Stephan
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Found that my bttv driver shared an IRQ with my network card. So I
disabled the network (modprobe -r b44), and voila - no real buffer
problems with my capture card anymore. It does not seem stable, but it
is generally working.
Could it be the motherboard?
If someone could point me to a resource
I was not able to get it working by disabling the network (unless I'm
misunderstanding something).
I did 'modprobe -r b44' and disabled networking and 'eth0' was no longer
showing up in 'cat /proc/interrupts'.
However, I still got the same error as always before.
Tvtime doesn't work on my test
I've been trying with
- OpenCV 1.0.0 from source
- OpenCV 1.1.0pre1 from source
- OpenCV SVN (current as of today)
- of course the packages included in Jaunty
NOTHING seems to work. I've applied the patch attached to this bug
report, and I am getting the infinite loop condition that David
This is the error I get with the OpenCV SVN as of today (Aug 3, 2009):
libv4l2: error dequeuing buf: Resource temporarily unavailable
This pointed me here:
https://bugs.launchpad.net/ubuntu/+source/libv4l/+bug/303174
and then here: https://bugs.launchpad.net/ubuntu/+source/libv4l/+bug/260918
Sorry, one last thing: tvtime seems to do things differently, since it
works perfectly fine with my card and camera. So no kernel bug after
all?
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bttv driver dies with VIDIOC_DQBUF error
https://bugs.launchpad.net/bugs/260251
You received this bug notification because you are a member of
@Stephan Fabel: I've noticed the exact same thing. tvtime seems to work
just fine with my cameras (last I tried them).
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bttv driver dies with VIDIOC_DQBUF error
https://bugs.launchpad.net/bugs/260251
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Hi Steven,
There seems to be something very odd going on with OpenCV's v4l driver
and the way it interacts with v4l/bttv driver. Whilst
http://opencvlibrary.svn.sourceforge.net/viewvc/opencvlibrary?view=revrevision=1609
at least prevented the EIO from crashing OpenCV, it was still
accompanied by
[This is an automated message. Apologies if it has reached you
inappropriately.]
This bug was flagged as having a patch attached. 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
Still not working for me.
Now using Ubuntu 9.04 with packages from Synaptic.
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bttv driver dies with VIDIOC_DQBUF error
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I should also note that the error now happens immediately, even the
window does not show up.
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bttv driver dies with VIDIOC_DQBUF error
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I recently reinstalled with Ubuntu 8.10 and installing all openCV items
in Synaptic's manager. I'm not having the problem anymore.
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bttv driver dies with VIDIOC_DQBUF error
https://bugs.launchpad.net/bugs/260251
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There is another experimental fix in upstream subversion.
http://opencvlibrary.svn.sourceforge.net/viewvc/opencvlibrary/trunk/opencv/src/highgui/cvcap_v4l.cpp?r1=1604r2=1609
I've rebuilt a local copy of the current package with this fix included
and seeing if this makes things any better.
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Alas, yes. After a proper test this morning we still had the program
crash with the VIDIOC_DQBUF error. So unfortunately, no, it doesn't
look like the 2.6.28 kernel fixed the bug.
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bttv driver dies with VIDIOC_DQBUF error
https://bugs.launchpad.net/bugs/260251
You received this bug
Current open bug on the OpenCV bugtracker.
** Changed in: opencvlib
Bugwatch: SourceForge.net Tracker #2585068 = SourceForge.net Tracker
#2593654
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bttv driver dies with VIDIOC_DQBUF error
https://bugs.launchpad.net/bugs/260251
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I'm still having this same problem (VIDIOC_DQBUF error 5, bttv timeout)
with openCV using both Intrepid and Jaunty. For me, nothing has changed
between kernel versions. When the video comes up, the display is purely
black, and quickly terminates along with new dmesg entries.
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bttv driver
Ok, this may in fact be a kernel bug. I've just tried installing the
2.6.28 Kernel from Jaunty and I'm no longer getting these EIO errors and
kernel warning messages when trying out the sample programs. I'd still
like to try this with a proper program, so I need to chase up my project
partner who
Ok. Since I didn't have much luck with the patch against the current
Ubuntu package I've grabbed the latest version from Subversion and built
that (Using the cmake/make combination). Unfortunately while programs no
longer terminate with the 'VIDIOC_DQBUF error 5, Input/output error'
they'll
At the moment I'm building using the currently intrepid package source.
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 found I found it was a bit of a mess to remove.
(It
Thanks for the link ciril.
Having a look at the both the current svn and the current package in intrepid
they both contain that patch to fix the EAGAIN. It looks like any other errors
will still cause opencv to terminate. In my case the bttv card returns error 5,
EIO, which according to the the
** Bug watch added: SourceForge.net Tracker #2585068
http://sourceforge.net/support/tracker.php?aid=2585068
** Also affects: opencvlib via
http://sourceforge.net/support/tracker.php?aid=2585068
Importance: Unknown
Status: Unknown
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bttv driver dies with VIDIOC_DQBUF error
I've just rebuilt the package with a small patch that will cause the
highgui to ignore the EIO error. This has also been checked in upstream
as an experimental fix. It seems to fix the problem, but I'd like to
test it for a bit longer than the 5 minutes I had tonight.
** Attachment added: Patch
I can't even get the sourceforge SVN repository to build.
Keep getting this on make:
No rule to make target `cxcore/cxjacobieigens.cpp', needed by
`cxjacobieigens.lo'.
Anywho, what source are you using to build? It looks like the repos I have
already does what your patch changes.
.. But I can't
I've encountered this problem using the bttv driver card (Hauppauge
(bt878)) and OpenCV. It's quite odd since we've been successfully able
to capture video using GStreamer, but when using an OpenCV based
application (using the python bindings) will either not start or crash
after a seemingly
I have had same problem on fedora 8 _64. For temporary solution I
commented-out all occurences of errno_exit (VIDIOC_DQBUF) in
/opencv/otherlibs/highgui/cvcap_v4l.cpp and rebuild opencv. See also:
http://article.gmane.org/gmane.comp.lib.opencv/7660/match=vidioc%5fdqbuf
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bttv driver dies with
Still not working here...
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bttv driver dies with VIDIOC_DQBUF error
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** Tags added: linux-2.6.27
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bttv driver dies with VIDIOC_DQBUF error
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Same error here, using this card: http://www.amazon.com/Hauppauge-
ImpactVCB-
Capture-166-Profile/dp/B0002P4TK0/ref=sr_1_1?ie=UTF8s=electronicsqid=1219903140sr=8-1
Several seconds after opening the stream (in opencv and C++) it crashes
with the same error as the bug description describes.
Very
The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would
appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
There are one of two ways you should be able to test:
1) If you are comfortable
kernel 2.6.27-rc3 broke tvtime and using opencv still does not work.
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.
** Attachment added: main.cpp
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