I am getting frequent crashes with this camera. The kernel log contains various USB errors (a crash always leads to all USB devices reseting, but the camera stays dead afterwards until next reboot). The program that was using the camera cannot be killed. The LED on my USB hub on the port with the camera on it is blinking after the crash (other LEDs are off, if no device is connected, or on if a device works). Connecting the camera to some other USB port does not help, it still gives a blinking LED.
It is possible that I (a) have generic USB issues, not related to UVC at all, or that (b) all UVC cameras have the same issue (I don't have any others to test). P.S. for anybody considering buying this camera - DO NOT. The picture quality is not very good, but the auto focus is a real problem. It keeps refocusing the image, even though it is already in focus. The focusing does not focus directly, but instead runs the focus servo from one end to the other, very slowly. Because of this, your image will be blurry most of the time even at 320x240. And the optics are so bad that the focus does not only focus, but also zooms a bit while doing it. The Logitech 2 megapixel camera (Quickcam Pro for Notebooks, I think) has in every way far superior image quality and the device costs about the same as this Creative crap. However, it, too, has one important drawback - it scans the image a line at a time (not a frame at a time), so you get ugly distortion whenever anything in the image (or the camera itself) moves. Creative does not have this problem, but its other issues are still far worse than that. Can anyone recommend a truly good webcam? I am looking for high frame rates at high resolutions (VGA is not acceptable), good optics, etc. Ethernet is optimal, USB2 and FW/FW800 are OK (as long as they work in Linux). The price roof is around 300 €. The log: (a lot of these messages) urb status -32 urb status -32 urb status -32 urb status -32 usb 2-6.1: USB disconnect, address 4 hub 2-6:1.0: hub_port_status failed (err = -71) hub 2-6:1.0: connect-debounce failed, port 1 disabled usb 2-6.1: new full speed USB device using ehci_hcd and address 5 usb 2-6.1: configuration #1 chosen from 2 choices cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth cannot submit datapipe for urb 0, error -28: not enough bandwidth ehci_hcd 0000:00:1a.7: fatal error uvcvideo: Failed to resubmit video URB (-108). uvcvideo: Failed to resubmit video URB (-108). uvcvideo: Failed to resubmit video URB (-108). uvcvideo: Failed to resubmit video URB (-108). uvcvideo: Failed to resubmit video URB (-108). usb 3-1: new full speed USB device using uhci_hcd and address 2 usb 3-1: not running at top speed; connect to a high speed hub usb 3-1: configuration #1 chosen from 1 choice hub 3-1:1.0: USB hub found hub 3-1:1.0: 4 ports detected usb 3-1.1: new low speed USB device using uhci_hcd and address 3 usb 3-1.1: configuration #1 chosen from 1 choice input: HID 04d9:1400 as /class/input/input4 input: USB HID v1.10 Keyboard [HID 04d9:1400] on usb-0000:00:1a.0-1.1 input: HID 04d9:1400 as /class/input/input5 input: USB HID v1.10 Mouse [HID 04d9:1400] on usb-0000:00:1a.0-1.1 usb 3-1.2: new full speed USB device using uhci_hcd and address 4 usb 3-1.2: configuration #1 chosen from 1 choice input: Razer Razer Copperhead Laser Mouse as /class/input/input6 input: USB HID v10.01 Mouse [Razer Razer Copperhead Laser Mouse] on usb-0000:00:1a.0-1.2 input: Razer Razer Copperhead Laser Mouse as /class/input/input7 input: USB HID v10.01 Keyboard [Razer Razer Copperhead Laser Mouse] on usb-0000:00:1a.0-1.2 usb 3-1.3: new full speed USB device using uhci_hcd and address 5 usb 3-1.3: not running at top speed; connect to a high speed hub usb 3-1.3: configuration #1 chosen from 1 choice uvcvideo: Found UVC 1.00 device <unnamed> (041e:4058) Device initialization failed: the default format and/or frame are not valid. uvcvideo: <3>uvcvideo: Failed to initialize the device (-22). usb 3-1.3: USB disconnect, address 5 usb 3-1.4: new full speed USB device using uhci_hcd and address 6 usb 3-1.4: not running at top speed; connect to a high speed hub usb 3-1.4: configuration #1 chosen from 1 choice uvcvideo: Found UVC 1.00 device <unnamed> (041e:4058) uvcvideo: Non-zero status (-84) in status completion handler. usb 3-1.4: USB disconnect, address 6 _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
