On Monday 16 March 2009 21:43:41 Riccardo Magliocchetti wrote:
> hi,
>
> my syntek webcam (174f:5931) does not work with ekiga and cheese but
> it works fine with luvcview.
>
> The kernel is latest linus git tree v2.6.29-rc8-124-g5bee17f , libv4l is
> 0.5.9.
>
> I've attached lsusb -v output and this is cheese output:
>
> Cheese 2.24.3
> Probing devices with HAL...
> Found device 174f:5931, getting capabilities...
> Detected v4l2 device: USB2.0 UVC PC Camera
> Driver: uvcvideo, version: 256
> Capabilities: 0x04000001
>
> Probing supported video formats...
> Device: USB2.0 UVC PC Camera (/dev/video0)
> video/x-raw-yuv 1280 x 1024 num_framerates 1
> 7/1 video/x-raw-yuv 1280 x 960 num_framerates 1
> 7/1 video/x-raw-yuv 1280 x 800 num_framerates 1
> 7/1 video/x-raw-yuv 1024 x 768 num_framerates 1
> 7/1 video/x-raw-yuv 800 x 600 num_framerates 1
> 7/1 video/x-raw-yuv 640 x 480 num_framerates 1
> 20/1 video/x-raw-yuv 352 x 288 num_framerates 1
> 24/1 video/x-raw-yuv 320 x 240 num_framerates 1
> 24/1 video/x-raw-yuv 176 x 144 num_framerates 1
> 24/1 video/x-raw-yuv 160 x 120 num_framerates 1
> 24/1 video/x-raw-yuv 1280 x 1024 num_framerates 1
> [snip]
>
> v4l2src name=video_source device=/dev/video0 ! capsfilter
> name=capsfilter
> caps=video/x-raw-rgb,width=800,height=600,framerate=7/1;video/x-raw-yuv,wid
>th=800,height=600,framerate=7/1 ! identity
> libv4l2: error setting pixformat: Device or resource busy
> libv4l2: error requesting 4 buffers: Device or resource busy

The device seems to be already open. Use fuser to find out if an application 
is using the video device.

Best regards,

Laurent Pinchart

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