Re: [Linux-uvc-devel] QC fusion almost working in kopete

[Nick W. <ni...@cu...>]

On Thursday 02 February 2006 1:23 pm, Laurent Pinchart wrote:
> Hi Nick,
>
> > I'm pretty new to the list, hopefully I can contribute something.
>
> Seems you can at least contribute problems :-)

Yes, that I can do!

>
> > Im running kopete 0.11.1 with kde 3.5.1 on a Gentoo system, kernel
> > 2.6.14.3. I grabbed the driver (rev 16), compiled, installed,
> > loaded...dmesg said all was well. I fired up kopete and the camera was
> > working(!), though zoomed in so all I could see was my forehead :)
>
> When Kopete receives an image bigger than it expects, only the upper-left
> corner of the image will be used instead of resizing it properly.
>

Is there a workaround I've missed?

> > I left the config window for a minute, then went back to it. Now the
> > window just showed a pixelized QT logo. dmesg showed:
> >
> > uvcvideo: Failed to query UVC control 1 (unit 0) : -110.
> >
> > so I unloaded/reloaded the driver:
> >
> > usbcore: deregistering driver usbvideo
> > uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c1)
> > uvcvideo: Failed to query UVC control 1 (unit 0) : -110.
> > uvcvideo: Failed to initialize the device (-5).
> > usbcore: registered new driver usbvideo
> > USB Video Class driver (v0.1.0)
>
> -110 is -ETIMEDOUT. This means the camera failed to answer fast enough. I'm
> not sure why this happens, but do you remember if the blue light was on
> when you went back to the Kopete window ?

Yes, it was.

> I noticed that the webcams are 
> sometimes slower to answer when video streaming is on. It seems that your
> camera was left in an unknown state. Unplugging and replugging the webcam
> should fix the problem. If not, the USB subsystem might be screwed up.
>

Did that, now I get lines :) see...I can contribute lots of problems.

> Can you reproduce the problem ?

Yes.

> Does unplugging and replugging the webcam 
> make it functionnal again ?

Sort of (the "lines" move when the camera sees motion, but the picture is 
unrecognisable).

> Could you try upgrading to kernel 2.6.15 and 
> see if things are better ?

I'd be happy to. I will let you know tomorrow if it works -- if not I'll try 
Alexandre Becoulet's patch and report on that as well.

If it matters, I was able to sync my iPod, so the USB subsystem must still be 
in decent shape.

Nick