UÅytkownik W.P. napisaÅ: > UÅytkownik Laurent Pinchart napisaÅ: > >> Hi, >> >> On Wednesday 02 March 2011 16:57:05 W.P. wrote: >> >> >>> Hi there, >>> I just got an Creative VGA (640x480) USB Live Webcam, VF0520. >>> >>> lsusb (partial): >>> >>> Bus 003 Device 007: ID 041e:406c Creative Technology, Ltd >>> Device Descriptor: >>> bLength 18 >>> bDescriptorType 1 >>> bcdUSB 2.00 >>> bDeviceClass 239 Miscellaneous Device >>> bDeviceSubClass 2 ? >>> bDeviceProtocol 1 Interface Association >>> bMaxPacketSize0 64 >>> idVendor 0x041e Creative Technology, Ltd >>> idProduct 0x406c >>> bcdDevice 10.19 >>> iManufacturer 1 Creative Labs >>> iProduct 3 VF0520 Live! Cam Sync >>> iSerial 0 >>> bNumConfigurations 1 >>> >>> lsmod | grep vid: >>> uvcvideo 50184 0 >>> compat_ioctl32 5120 1 uvcvideo >>> videodev 32000 1 uvcvideo >>> v4l1_compat 15876 2 uvcvideo,videodev >>> >>> uname -a (kernel from Fedora 10): >>> [root@laurent-home ~]# uname -a >>> Linux laurent-home 2.6.27.5-117.fc10.i686 #1 SMP Tue Nov 18 12:19:59 EST >>> 2008 i686 athlon i386 GNU/Linux >>> >>> Problem: device nodes are created, but NO video in gmplayer, tvtime >>> complains: can't open /dev/video0. >>> >>> Only trace in syslog is: >>> >>> Mar 2 16:26:56 laurent-home kernel: uvcvideo: Failed to submit URB 0 >>> (-28). >>> >>> >> This means the webcam requires more USB bandwidth than available. Another >> device probably uses USB bandwidth (it could be another webcam, an audio >> device, ...). >> >> >> > It is the only USB 2.0 device connected (rest are keyboard, mouse, 2x > PL2303 converters, BT, and WiFi (unused). But what is strange: it seems > device runs in 1.1 mode: > > Mar 3 15:54:46 laurent-home kernel: usb 3-1.4: new full speed USB > device using > uhci_hcd and address 24 > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: *not running at top > speed*; conne > ct to a high speed hub > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: configuration #1 chosen > from 1 > choice > Mar 3 15:54:47 laurent-home kernel: uvcvideo: Found UVC 1.00 device > VF0520 Liv > e! Cam Sync (041e:406c) > Mar 3 15:54:47 laurent-home kernel: uvcvideo: Found a valid video chain > (1 -> > 2). > Mar 3 15:54:47 laurent-home kernel: input: VF0520 Live! Cam Sync as > /devices/p > ci0000:00/0000:00:0b.1/usb3/3-1/3-1.4/3-1.4:1.0/input/input19 > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: New USB device found, > idVendor= > 041e, idProduct=406c > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: New USB device strings: > Mfr=1, > Product=3, SerialNumber=0 > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: Product: VF0520 Live! > Cam Sync > Mar 3 15:54:47 laurent-home kernel: usb 3-1.4: Manufacturer: Creative Labs > > But I have tested it with 2 hubs on different controller ports, same. > >>> Webcam is connected to VIA USB 2.0 controller through a USB 2.0 hub. >>> >>> What is strange, two days ago I tried apparently the same (model VFxxxx) >>> with SUCCESS. >>> Device seems working in Windoze (Ekiga). >>> >>> What should I check/ do? >>> >>> > Only switching OS (for test) and it works. WTF? > > Connecting to controller directly -> detected as high speed and works. Again, question is WTF? > W.P. > -- 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
