Hello again, now I discovered, that it's possible to change module parameters even if they are compiled in kernel... So I did: echo 2 > /sys/module/uvcvideo/parameters/quirks And v4l example now ends like this: VIDIOC_S_FMT error 28, No space left on device Error "No space left" indicates problem with USB bandwidth? How can I solve it? I tried to change resolution in v4l example from 640x480 to 160x120 but it didn't help. Dne 12. dubna 2011 18:37 ZdenÄk Materna <zdenek.materna@xxxxxxxxx> napsal(a): > Hello, > > I have problem with UVC webcam. It's Genius Facecam 1000. I would like > to use it with mjpg-streamer. Before this model, I had Facecam 1320, > but it wasn't mjpeg capable, so mjpg-streamer had to do jpeg > compresion and it was quite slow. Facecam 1000 can provide mjpg stream > by itself and it works great on x86, but it doesn't work on ARM. To > exclude problem in mjpg-streamer I compiled v4l capture example > (http://v4l2spec.bytesex.org/spec-single/v4l2.html#CAPTURE-EXAMPLE) > and it's same - works on x86 a not on ARM. > > On embedded platform I'm using AT91SAM9260 (Olimex kit L9260) which > has USB2.0, but only full-speed - is it problem? I don't think so - > previous webcam works great. > > On x86 I use kernel 2.6.35 and glibc. On ARM there is kernel > 2.6.33.7.2-rt30 and uClibc. > > v4l example fails with this error: VIDIOC_STREAMON error 5, Input/output error > > webcam is detected correctly: > [ 2042.100000] usb 1-1: new full speed USB device using at91_ohci and address 3 > [ 2042.290000] usb 1-1: New USB device found, idVendor=0458, idProduct=707e > [ 2042.290000] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > [ 2042.310000] usb 1-1: Product: FaceCam 1000 > [ 2042.320000] usb 1-1: Manufacturer: KYE SYSTEMS CORP. > [ 2042.400000] uvcvideo: Found UVC 1.00 device FaceCam 1000 (0458:707e) > [ 2042.460000] input: FaceCam 1000 as > /devices/platform/at91_ohci/usb1/1-1/1-1:1.0/input/input1 > > Thanks for any advice! > > Best regards > Zdenek Materna > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
