Hi George,

On Saturday 29 December 2007, George Peter Staplin wrote:
> This is a followup to my message about the Creative VF0410 Live! Cam
> Video IM Pro (041e:4063)
>
> I changed the uvc_trace_param in uvc_driver.c, so that I could get
> more information about what is going on:
> unsigned int uvc_trace_param = UVC_TRACE_PROBE | UVC_TRACE_DESCR |
> UVC_TRACE_CONTROL | UVC_TRACE_FORMAT | UVC_TRACE_CAPTURE |
> UVC_TRACE_CALLS | UVC_TRACE_IOCTL | UVC_TRACE_FRAME;
>
> Now when I insmod the driver, and plug in the webcam I get:
>
> [ 2626.794551] usb 5-8: new high speed USB device using ehci_hcd and
> address 12
> [ 2626.968643] usb 5-8: configuration #1 chosen from 1 choice
> [ 2626.969218] uvcvideo: Probing generic UVC device 8
> [ 2626.969234] uvcvideo: Found format YUV 4:2:2 (YUYV).
> [ 2626.969239] uvcvideo: - 640x480 (30.0 fps)
> [ 2626.969243] uvcvideo: - 352x288 (30.0 fps)
> [ 2626.969247] uvcvideo: - 320x240 (30.0 fps)
> [ 2626.969250] uvcvideo: - 176x144 (30.0 fps)
> [ 2626.969253] uvcvideo: - 160x120 (30.0 fps)
> [ 2626.969257] uvcvideo: Found format MJPEG.
> [ 2626.969261] uvcvideo: - 640x480 (30.0 fps)
> [ 2626.969264] uvcvideo: - 352x288 (30.0 fps)
> [ 2626.969267] uvcvideo: - 320x240 (30.0 fps)
> [ 2626.969271] uvcvideo: - 176x144 (30.0 fps)
> [ 2626.969274] uvcvideo: - 160x120 (30.0 fps)
> [ 2626.969282] uvcvideo: Found a Status endpoint (addr 83).
> [ 2626.969286] uvcvideo: Found UVC 1.00 device VF0410 Live! Cam Video
> IM Pro (041e:4063)
> [ 2626.969296] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/2 to device 8 entity 3
> [ 2626.969302] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/3 to device 8 entity 3
> [ 2626.969309] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/6 to device 8 entity 3
> [ 2626.969315] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/7 to device 8 entity 3
> [ 2626.969322] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/8 to device 8 entity 3
> [ 2626.969330] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/9 to device 8 entity 3
> [ 2626.969339] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/1 to device 8 entity 3
> [ 2626.969348] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/4 to device 8 entity 3
> [ 2626.969357] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/5 to device 8 entity 3
> [ 2626.969366] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000001/2 to device 8 entity 1
> [ 2626.969375] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000001/4 to device 8 entity 1
> [ 2626.969386] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/11 to device 8 entity 3
> [ 2626.969395] uvcvideo: Added control
> 00000000-0000-0000-0000-000000000101/10 to device 8 entity 3
> [ 2626.969402] uvcvideo: Scanning UVC chain: OT 2 <- XU 5 <- XU 4 <-
> PU 3 <- IT 1
> [ 2626.969415] uvcvideo: Found a valid video chain (1 -> 2).
> [ 2626.975707] uvcvideo: UVC device initialized.
> [ 2627.004211] 12:3:1: cannot get freq at ep 0x84
>
> Any clue as to why 12:3:1 (what is that?) thinks the endpoint 0x84 is
> invalid for freq (fetching?)?

The message is printed by the usbaudio driver. Don't worry about it. usbaudio 
has been fixed in 2.6.22 (or 2.6.23, can't remember from the top of my head). 
It shouldn't break anything anyway.

Your webcam seems to be correctly detected and initialised by the driver. It's 
now time to try and use it. I suggest luvcview, uvccapture or ucview for a 
first try. Let me know if it works.

Best regards,

Laurent Pinchart
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