Finally, I could do the network test in the school. When the computer freezes completely some time after having loaded skype using: > env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype\
and been using the web-cam in skype, I cannot ssh it neither ping it. Also, the camera works well with luvcview (I used luvcview to get the frames that I attached in my first post) Regards. On Wed, 2011-11-02 at 17:49 +0100, Laurent Pinchart wrote: > Hi Edwin, > > On Saturday 22 October 2011 00:36:14 Edwin Aponte wrote: > > libv4l2 is giving having problems with a Microsoft LifeCam NX-6000 > > webcam (045e:00f8). I have to run skype as below to get the webcam > > working well for a moment, though an error is generated, until the > > system freezes completely after some minutes and even SysRq doesn't > > work. > > Those two problems are likely unrelated, and the second one is pretty bad. Is > your machine connected to a network ? Can you still ping it after it freezes > ? > What about ssh ? > > > env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype > > libv4l2: error converting / decoding frame data: v4l-convert: error > > parsing > > JPEG header: Not a JPG file ? > > Your camera seems to produce bad MJPEG frames. From the log you've attached > it > seems that the first frame is bigger than the next ones. This might be > related. Could you try luvcview, which doesn't use libv4l ? > > > Sometimes, I get the same error with the program webcam: > > -------------------------- > > ~> webcam > > reading config file: /home/edwinh/.webcamrc > > video4linux webcam v1.5 - (c) 1998-2002 Gerd Knorr > > grabber config: > > size 320x240 [none] > > input (null), norm (null), jpeg quality 75 > > rotate=0, top=0, left=0, bottom=240, right=320 > > libv4l2: error converting / decoding frame data: v4l-convert: error > > parsing > > JPEG header: Not a JPG file ? > > > > > > v4l2: read: Input/output error > > capturing image failed > > ------------------------- > > > > and some times this other error: > > > > ------------------------- > > ~> webcam > > reading config file: /home/edwinh/.webcamrc > > video4linux webcam v1.5 - (c) 1998-2002 Gerd Knorr > > grabber config: > > size 320x240 [none] > > input (null), norm (null), jpeg quality 75 > > rotate=0, top=0, left=0, bottom=240, right=320 > > libv4lconvert: Error decompressing JPEG: fill_nbits error: need 1 more > > bits > > ------------------------- > > > > I have attached some information based on this thread > > http://lists.berlios.de/pipermail/linux-uvc-devel/2008-November/004265.html > > that seems to be a similar case of my problem. > > I set the trace level to 255: > > > > # echo 255 > /sys/module/uvcvideo/parameters/trace > > > > and I record a frame using: > > ~> luvcview -f mjpg -c > > > > and after that I saved the output of dmesg. > > > > Thanks. > _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
