Re: uvc open/close race (Was Re: v4l1 compat wrapper version 0.3)

[Hans de Goede <j.w.r.degoede@hhs.nl>]

Laurent Pinchart wrote:
>> I'm using a Logitech sphere usb id: 046d:08cc
>>
>> Fedora kernel: kernel-2.6.25-8.fc9, which includes UVC (added by Fedora).
> 
> That's a very buggy webcam. It has nasty firmware issues. See 
> http://www.quickcamteam.net/documentation/faq/logitech-webcam-linux-usb-incompatibilities
> 

Ah, I already feared that much, so its not MS's fault it doesn't work out of 
the box with vista then :)

>>> I would also appreciate if you could check the kernel log
>>> for error messages after triggering the problem.
>> No messages I'm afraid.
> 
> Now that's weird. The only error path that can return -EIO print a message to 
> the kernel log. Could you please double check ?
> 

Done,

There are some messages like this one:
uvcvideo: Failed to query (135) UVC control 7 (unit 2) : -75 (exp. 2).

(Also with different numbers) but those seemed harmless to me, as I interpreted 
them as could not get brightness / contrast / hue / etc. But maybe I 
misinterpreted them, sorry I should have reported them the first time.

Regards,

Hans

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