Hi, On Tuesday 22 February 2011 01:53:59 linux newbie wrote: > [ 515.220000] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0004 > [ 515.220000] str8100-ehci str8100-ehci: GetStatus port 2 status > 001009 POWER sig=se0 PEC CONNECT > [ 515.220000] hub 1-0:1.0: port 2 enable change, status 00000501 > [ 515.220000] hub 1-0:1.0: port 2 disabled by hub (EMI?), re-enabling... > [ 515.220000] hub 1-0:1.0: port 2, status 0501, change 0002, 480 Mb/s > [ 515.220000] usb 1-2: USB disconnect, address 2 > [ 515.220000] usb 1-2: unregistering device > [ 515.220000] usb 1-2: usb_disable_device nuking all URBs > [ 515.220000] str8100-ehci str8100-ehci: shutdown urb c3fbe000 ep1in-iso > [ 515.220000] str8100-ehci str8100-ehci: shutdown urb c3c4d000 ep1in-iso > [ 515.220000] str8100-ehci str8100-ehci: shutdown urb c3fbf800 ep1in-iso > [ 515.220000] str8100-ehci str8100-ehci: shutdown urb c3fbf000 ep1in-iso > [ 515.220000] str8100-ehci str8100-ehci: shutdown urb c3fbe800 ep1in-iso > [ 515.260000] usb 1-2: unlink qh16-0001/ffc02100 start 15 [1/0 us] > [ 515.260000] str8100-ehci str8100-ehci: shutdown urb c3c5b540 ep3in-intr > [ 515.260000] usb 1-2: unregistering interface 1-2:1.0 > [ 515.270000] usb 1-2:1.0: uevent > [ 515.270000] usb 1-2: unregistering interface 1-2:1.1 > [ 515.270000] usb 1-2:1.1: uevent > [ 515.280000] usb 1-2: unregistering interface 1-2:1.2 > [ 515.280000] usb 1-2:1.2: uevent > [ 515.280000] usb 1-2: unregistering interface 1-2:1.3 > [ 515.280000] usb 1-2:1.3: uevent > [ 515.280000] usb 1-2: uevent > [ 515.340000] str8100-ehci str8100-ehci: GetStatus port 2 status > 001002 POWER sig=se0 CSC > [ 515.340000] hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0004
That's a low-level USB issue. Bad cables, buggy webcam, noisy environment, ... The uvcvideo driver isn't at fault. If the camera decides to disconnect, there's little the driver can do. -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
