Hi Carl, On Tuesday 07 June 2011 02:31:17 Carl Michal wrote: > Hello, > > I'm having some trouble with a Quanta integrated webcam. It identifies > itself as: Laptop_Integrated_Webcam_2HDM, usbid: 0408:2fb1. This is built > in to a Dell XPS-15 (L501X).
Could you please send me the output of lsusb -v -d 0408:2fb1 running as root if possible ? > The uvcvideo module works, but the video stutters and has some > distortions, even at low resolutions and frame rates. > > With the Camera Output set to MJPG (in guvcview) "Ignoring empty buffer > ..." messages occur with most glitches. > > If the output is set to YV12, the errors look like: > > VIDIOC_DQBUF - Unable to dequeue buffer : Input/output error > Error grabbing image > libv4l2: error converting / decoding frame data: v4l-convert: error > parsing JPEG header: Not a JPG file ? > > With cheese, the video preview looks ok, but video capture is > unusable - the video stutters badly at low resolution, and the capture > hangs at high resolution (the program doesn't hang, but after a couple of > frames no more get captured). > > This is kernel 2.6.39 on gentoo with libv4l-0.8.3 > > Any advice would be appreciated. I'll answer in the mail thread. -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
