Hello kernel devs, I've been noticing stability problems with my USB webcam, it used to be just bogus volume warning notice but now I have to unplug/plugin, unplug and sometimes it works, sometimes not. It seems to work less now. It used to be lesser of a problem in eariler 4.x but now in 4.2/4.3 it's become very unstable in use. The device will sometimes be force disconnected by the USB bus Both USB 2.x/USB 3.x bus device ports. Below is kernel msgs of failure: Thanks, Shawn [ 107.510683] usb 1-1: reset high-speed USB device number 2 using xhci_hcd [ 1558.485719] usb 1-1: reset high-speed USB device number 2 using xhci_hcd [22996.495603] usb 1-1: reset high-speed USB device number 2 using xhci_hcd [23015.964902] usb 1-1: reset high-speed USB device number 2 using xhci_hcd [23017.886591] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23023.282498] usb 1-1: reset high-speed USB device number 2 using xhci_hcd [23035.010933] usb 1-1: USB disconnect, device number 2 [23046.412316] usb 1-1: new high-speed USB device number 5 using xhci_hcd [23046.711073] usb 1-1: New USB device found, idVendor=046d, idProduct=0990 [23046.711426] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [23046.711780] usb 1-1: SerialNumber: B4261720 [23046.712415] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990) [23046.744959] input: UVC Camera (046d:0990) as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/input/input24 [23047.138076] usb 1-1: Warning! Unlikely big volume range (=3072), cval->res is probably wrong. [23047.138504] usb 1-1: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1 [23055.241577] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23074.561834] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23089.251001] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23089.544931] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23094.823168] uvcvideo: Failed to set UVC probe control : -110 (exp. 26). [23104.003182] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23104.297038] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23115.198761] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23117.118523] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23137.491620] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23139.411020] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23146.809652] usb 1-1: reset high-speed USB device number 5 using xhci_hcd [23161.863901] usb 1-1: USB disconnect, device number 5 [23166.711888] usb 1-2: new high-speed USB device number 6 using xhci_hcd [23167.010096] usb 1-2: New USB device found, idVendor=046d, idProduct=0990 [23167.010432] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [23167.010777] usb 1-2: SerialNumber: B4261720 [23167.011452] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990) [23167.044467] input: UVC Camera (046d:0990) as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/input/input25 [23167.437046] usb 1-2: Warning! Unlikely big volume range (=3072), cval->res is probably wrong. [23167.437468] usb 1-2: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1 [23180.400229] usb 1-2: reset high-speed USB device number 6 using xhci_hcd [23182.319743] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23189.733146] usb 1-2: reset high-speed USB device number 6 using xhci_hcd [23204.787522] usb 1-2: USB disconnect, device number 6 [23217.185055] usb 1-2: new high-speed USB device number 7 using xhci_hcd [23217.482873] usb 1-2: New USB device found, idVendor=046d, idProduct=0990 [23217.483215] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [23217.483570] usb 1-2: SerialNumber: B4261720 [23217.484210] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990) [23217.516471] input: UVC Camera (046d:0990) as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/input/input26 [23217.908525] usb 1-2: Warning! Unlikely big volume range (=3072), cval->res is probably wrong. [23217.908948] usb 1-2: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1 [23234.440066] usb 1-2: reset high-speed USB device number 7 using xhci_hcd [23240.010115] uvcvideo: Failed to set UVC probe control : -110 (exp. 26). [23247.331979] usb 1-2: reset high-speed USB device number 7 using xhci_hcd [23247.627113] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23262.752322] usb 1-2: reset high-speed USB device number 7 using xhci_hcd [23264.672678] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23271.261131] usb 1-2: reset high-speed USB device number 7 using xhci_hcd [23281.899397] usb 1-2: USB disconnect, device number 7 [23309.462489] usb 1-2: new high-speed USB device number 8 using xhci_hcd [23309.760538] usb 1-2: New USB device found, idVendor=046d, idProduct=0990 [23309.760872] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [23309.761220] usb 1-2: SerialNumber: B4261720 [23309.761880] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990) [23309.795442] input: UVC Camera (046d:0990) as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/input/input27 [23310.188687] usb 1-2: Warning! Unlikely big volume range (=3072), cval->res is probably wrong. [23310.189111] usb 1-2: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1 [23336.877625] usb 1-2: reset high-speed USB device number 8 using xhci_hcd [23338.798062] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23381.349405] usb 1-2: USB disconnect, device number 8 [23391.736670] usb 1-2: new high-speed USB device number 9 using xhci_hcd [23392.035799] usb 1-2: New USB device found, idVendor=046d, idProduct=0990 [23392.036134] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2 [23392.036479] usb 1-2: SerialNumber: B4261720 [23392.037089] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0990) [23392.070112] input: UVC Camera (046d:0990) as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/input/input28 [23392.463766] usb 1-2: Warning! Unlikely big volume range (=3072), cval->res is probably wrong. [23392.464195] usb 1-2: [5] FU [Mic Capture Volume] ch = 1, val = 4608/7680/1 [23404.160661] usb 1-2: reset high-speed USB device number 9 using xhci_hcd [23406.080815] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23429.272065] usb 1-2: reset high-speed USB device number 9 using xhci_hcd [23429.565784] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23435.044294] uvcvideo: Failed to set UVC probe control : -110 (exp. 26). [23437.597984] uvcvideo: Failed to set UVC probe control : -71 (exp. 26). [23442.170997] usb 1-2: reset high-speed USB device number 9 using xhci_hcd [23442.465014] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23456.518200] usb 1-2: reset high-speed USB device number 9 using xhci_hcd [23458.436180] restoring control 00000000-0000-0000-0000-000000000101/10/5 [23470.345278] usb 1-2: reset high-speed USB device number 9 using xhci_hcd [23472.262805] restoring control 00000000-0000-0000-0000-000000000101/10/5 -- 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
