Hi Martin,

On Sunday 09 December 2007, Martin Ebourne wrote:
> Hi,
>
> I have a Logitech Quickcam Pro for Notebooks (046d:0991) which works
> with ekiga (3.0 svn) the first time I run it, but on subsequent runs
> ekiga fails to open the camera and gives an error 'Your driver doesn't
> seem to support any of the colour formats supported by Ekiga.'
>
> If I unplug and reinsert the camera ekiga works again for one more run.
> These are the messages when the camera is inserted:
>
> usb 1-6: new high speed USB device using ehci_hcd and address 3
> usb 1-6: configuration #1 chosen from 1 choice
> Linux video capture interface: v2.00
> uvcvideo: Found UVC 1.00 device <unnamed> (046d:0991)
> usbcore: registered new interface driver uvcvideo
> USB Video Class driver (v0.1.0)
>
> These errors appear when ekiga loads and the camera works:
>
> uvcvideo: Failed to query (135) UVC control 2 (unit 2) : -110 (exp. 2).
> uvcvideo: Failed to query (135) UVC control 7 (unit 2) : -110 (exp. 2).
> uvcvideo: Failed to query (135) UVC control 3 (unit 2) : -110 (exp. 2).
>
> These errors appear when it doesn't work:
>
> uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -110 (exp. 26).
> uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -32 (exp. 26).
> uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -32 (exp. 26).
> uvcvideo: Failed to query (1) UVC control 1 (unit 0) : -32 (exp. 26).
>
> I've asked over in the ekiga list
> http://mail.gnome.org/archives/ekiga-devel-list/2007-December/msg00029.html
> and they think it is a linux-uvc bug.

It sounds like a driver and/or hardware/firmware issue. Could you please give 
me more information regarding your hardware configuration ? The content 
of /proc/cpuinfo and the output of lspci and lsusb might help diagnose the 
issue.

> I'm using r148 of linux-uvc and kernel-2.6.23.8-63.fc. I've also
> attached a debug log from ekiga when it didn't work.

Best regards,

Laurent Pinchart
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