hi all: My kernel is 3.8.0. and when I plug in "microsoft LifeCam", I get message at the end of mail about cannot get min/max values from camera. is there any usb audio class initial sequence we need to check when this message pop out? Appreciate your help in advance,
usb 3-1: new high-speed USB device number 2 using Platform-ehci Platform-ehci Platform-ehci.0: port 1 reset complete, port enabled Platform-ehci Platform-ehci.0: GetStatus port:1 status 00000d 0 ACK sig=se0 PEC PE CONNECT usb 3-1: skipped 1 descriptor after configuration usb 3-1: skipped 6 descriptors after interface usb 3-1: skipped 1 descriptor after endpoint usb 3-1: skipped 28 descriptors after interface usb 3-1: skipped 1 descriptor after endpoint usb 3-1: skipped 4 descriptors after interface usb 3-1: skipped 2 descriptors after interface usb 3-1: skipped 1 descriptor after endpoint usb 3-1: default language 0x0409 usb 3-1: udev 2, busnum 3, minor = 257 usb 3-1: New USB device found, idVendor=045e, idProduct=075d usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 3-1: Product: Microsoft® LifeCam Cinema(TM) usb 3-1: Manufacturer: Microsoft usb 3-1: usb_probe_device usb 3-1: configuration #1 chosen from 1 choice usb 3-1: adding 3-1:1.0 (config #1, interface 0) uvcvideo 3-1:1.0: usb_probe_interface uvcvideo 3-1:1.0: usb_probe_interface - got id uvcvideo: Found UVC 1.00 device Microsoft® LifeCam Cinema(TM) (045e:075d) input: Microsoft® LifeCam Cinema(TM) as /devices/platform/Platform-ehci.0/usb3/3-1/3-1:1.0/input/input4 usb 3-1: adding 3-1:1.1 (config #1, interface 1) usb 3-1: adding 3-1:1.2 (config #1, interface 2) snd-usb-audio 3-1:1.2: usb_probe_interface snd-usb-audio 3-1:1.2: usb_probe_interface - got id ALSA sound/usb/stream.c:682 2:3:1: add audio endpoint 0x82 usb 3-1: khubd timed out on ep0in len=0/3 ALSA sound/usb/clock.c:237 2:3:1: cannot get freq at ep 0x82 ALSA sound/usb/mixer.c:1305 [5] FU [Mic Capture Switch] ch = 1, val = 0/1/1 ALSA sound/usb/mixer.c:929 5:2: cannot get min/max values for control 2 (id 5) ALSA sound/usb/mixer.c:1305 [5] FU [Mic Capture Volume] ch = 1, val = 0/1/1 ALSA sound/usb/mixer.c:929 5:2: cannot get min/max values for control 2 (id 5) usb 3-1: adding 3-1:1.3 (config #1, interface 3) hub 3-0:1.0: state 7 ports 1 chg 0000 evt 0002 Platform-ehci Platform-ehci.0: GetStatus port:1 status 00000d 0 ACK sig=se0 PEC PE CONNECT hub 3-0:1.0: port 1 enable change, status 00000403