Claudio hi, 2010/11/24 <malef...@malefico3d.org>: > Hi Laurent, > > http://www.pasteall.org/17101 is the output of lsusb -v, line 176 starts > blurb about webcam. > >> Have you tried the FIX_BANDWIDTH quirk ? > > No, where is that ? kernel source ? >
just do: rmmod uvcvideo modprobe uvcvideo quirks=128 This will make the driver calculate the needed usb bandwidth for your camera, some devices just request the maximum value and this may cause problems if other devices are connected to the same controller. If I'm not mistaken this will only work for uncompressed streams (yuv). Regards, Paulo > Thanks for the feedback ! > > Claudio > >> Hi Claudio, >> >> On Wednesday 24 November 2010 14:40:47 malef...@malefico3d.org wrote: >>> > This is a bit strange, do you have more than one video device ? >>> > What do you have now as /dev/video0 ? >>> >>> No, this happened after I configured ALSA so the audio capture device >>> integrated in the camera, will be taken as the second soundcard (I >>> already >>> have one that I prefer to be the default soundcard). I'm not saying it >>> is >>> related but after doing this, the camera started to be /dev/video1. >>> Nothing really changed anyway, webcam kept on same way. >>> >>> >> Is there any way to detect and fix the bandwidth problem ? >>> > >>> > check this thread: >>> > http://www.mail-archive.com/linux-usb-us...@lists.sourceforge.net/msg1483 >>> > 8.html >>> >>> Thanks I will look into it. I presume I have to rebuild the kernel in >>> order to get those "bandwidth load reports" I see in this thread, right >>> ? >>> >>> The other thing is once I detected the problem is the bandwidth, what >>> should I do ? >> >> Have you tried the FIX_BANDWIDTH quirk ? >> >>> how do I add a second USB controller to my computer ? >>> >>> I wonder if ANYONE here has tried this camera and make it work... >> >> Could you please send me the USB descriptors for your camera (lsusb -v) ? >> >> -- >> Regards, >> >> Laurent Pinchart >> > > > _______________________________________________ > Linux-uvc-devel mailing list > Linux-uvc-devel@lists.berlios.de > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
