On Wed, 28 Sep 2011, gene heskett wrote: > Greets all; > > I have an old Labtec 'webcam' that I bought 6 or 7 years ago, and which was > worthless then because its data stream could overpower the usb drivers & > stall. > > Then I built an ASUS M2N_SLI Deluxe machine with 4Gb of ram, an AMD Phenom > X4 running at 2.1Ghz, figuring that would, or should be, enough horsepower. > > Now, while the images have better color, I can still only run it in 320x240 > mode. 640x480 will freeze within the first 5 seconds. According to the > files motion saves, 320x240 isn't quite 16k a frame, and 640x480 is about > 43k a frame. > > dmesg shows this: > > gspca: probing 046d:08a2 > zc3xx: probe sensor -> 000e > zc3xx: Find Sensor PAS202B > input: zc3xx as /devices/pci0000:00/0000:00:02.0/usb2/2-6/input/input8 > gspca: video0 created > ohci_hcd 0000:00:02.0: leak ed f3eb2000 (#81) state 2 That shouldn't happen. Can you provide a usbmon trace showing what happens when the driver is loaded and you run your test? > gspca: bandwidth not wide enough - trying again > ohci_hcd 0000:00:02.0: leak ed f3eb2240 (#81) state 2 > gspca: bandwidth not wide enough - trying again > ohci_hcd 0000:00:02.0: leak ed f3eb2280 (#81) state 2 > gspca: bandwidth not wide enough - trying again > ohci_hcd 0000:00:02.0: leak ed f3eb22c0 (#81) state 2 > gspca: bandwidth not wide enough - trying again > ohci_hcd 0000:00:02.0: leak ed f3eb2300 (#81) state 2 > gspca: bandwidth not wide enough - trying again > ohci_hcd 0000:00:02.0: leak ed f3eb2340 (#81) state 2 > gspca: bandwidth not wide enough - trying again > > Is this z3xx driver still suffering from not enough system cajones to keep > up? It's probably not system resources but rather the limitations of full-speed USB. What does "lsusb -v" have to say about this webcam? And do you have any other USB devices plugged into the same controller (the lsusb listing will show them)? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
