Hi Patrice,
please post support request to the linux-uvc-devel list.
On Tuesday 23 October 2007, patrice poly wrote:
> Hello Laurent
>
> I am using a pavilion laptop with an integrated Ricoh webcam
> (05ca:1810 ,ricoh-webcam-r5u870), on the latest mandriva 2008.
> This webcam worked pretty good before ( think it was 2.6.17 ; on mandriva
> 2007)
With the Linux UVC driver ? I seem to remember the r5u870 wasn't completely
UVC-compliant. Weren't you using a r5u870 specific driver ?
> I just switched to 2008, with the 2.6.22.9 kernel , and now I get :
>
> uvcvideo: Found UVC 1.00 device <unnamed> (05ca:1810)
> uvcvideo: Failed to query (135) UVC control 1 (unit 0) : -32 (exp. 26).
> uvcvideo: Failed to initialize the device (-5).
>
> /dev/video0 is not created
The above message looks weird. With the latest driver version the second line
("Failed to query...") should not be fatal.
> I've read the uvc-devel archives, and found a few threads about it,
> particularly one on which you explain a workaround that implies
> unplugging/plugging the camera.
The workaround applies to Logitech webcams only so it won't help here.
> I'm not sure I understood all , but, what is sure is that I can't un/plug
> it, as it is integrated :) ( or is there a way to fake it ? )
>
> I tried to build the module from SVN, insmod it after snd_usb_audio,
> preventing uvcvideo from beeing loaded at boot time by removing it
> in /lib/modules... and many other tinkerings, but so far I couldn't get it
> to work.
> dmesg keeps complaining about Failing to query, whatever I try.
Make sure you are using the latest driver version. Delete every occurrence of
uvcvideo.ko in /lib/modules/`uname -r` before installing the driver from
source. This will prevent loading an older version by mistake.
Once you're sure you're using the latest version, check the kernel log. The
third line ("Failed to initialize...") should have disappeared, or something
else should have been inserted before.
> I'm a bit confused ...
> Think you could try to bring me the light on what the issue is ?
I'll try :-)
> Thank you anyway for all, and hope to hear from you soon
Best regards,
Laurent Pinchart
_______________________________________________
Linux-uvc-devel mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
