Hi Drew!
I'm the xHCI driver maintainer, and it helps to Cc me on issues with USB
devices under xHCI hosts.
On Sun, Sep 29, 2013 at 11:14:47AM -0500, Drew Von Spreecken wrote:
> I have an Elan touchscreen that is causing USB resets and errors at
> boot and intermittently during use. The touchscreen works as
> expected but messages are still being logged to kern.log.
>
> It appears to get detected correctly:
>
> Bus 001 Device 002: ID 8087:8000 Intel Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 002 Device 013: ID 04f3:0089 Elan Microelectronics Corp.
> Bus 002 Device 004: ID 2232:1049
> Bus 002 Device 003: ID 8087:07dc Intel Corp.
> Bus 002 Device 017: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>
> The recurring output of dmesg:
> [ 523.082262] usb 2-7: new full-speed USB device number 9 using xhci_hcd
> [ 525.186961] usb 2-7: unable to read config index 0 descriptor/start: -71
> [ 525.186972] usb 2-7: can't read configurations, error -71
-71 is EPROTO, which indicates a protocol error on the bus. That
usually means there's something wrong electrically with the device.
There's really not much software can do about that type of error.
Is this system still under warranty?
> [ 525.480927] usb 2-7: new full-speed USB device number 11 using xhci_hcd
> [ 527.586140] usb 2-7: unable to read config index 0 descriptor/start: -71
> [ 527.586151] usb 2-7: can't read configurations, error -71
> [ 527.879594] usb 2-7: new full-speed USB device number 13 using xhci_hcd
> [ 527.897529] usb 2-7: New USB device found, idVendor=04f3, idProduct=0089
> [ 527.897540] usb 2-7: New USB device strings: Mfr=4, Product=14,
> SerialNumber=0
> [ 527.897546] usb 2-7: Product: Touchscreen
> [ 527.897551] usb 2-7: Manufacturer: ELAN
> [ 527.897871] usb 2-7: ep 0x2 - rounding interval to 64
> microframes, ep desc says 80 microframes
>
> I believe the xorg input driver in-use is EVDEV:
>
> xserver-xorg-input-evdev:
> Installed: 1:2.8.1-1+b2
>
>
> I have also compiled 11.2 RC2 with the same issues and can be
> reproduced using earlier kernels too.
Do you mean 3.12-rc2? I'm not sure what you meant by 11.2 RC2.
> Removing or blacklisting the xhci_hcd module stops the error message
> and also kills the touchscreen functionality and other parts of the
> system such as the SD Card reader.
Yep, that's expected.
> I've attached the full lsusb output.
>
> If other details are needed, please let me know and they will be
> promptly attached.
There's really not much I think we can do here. Your device is just
broken. I assume it's internal, so it's not easy to replace?
Sarah Sharp
>
> Bus 001 Device 002: ID 8087:8000 Intel Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 1 Single TT
> bMaxPacketSize0 64
> idVendor 0x8087 Intel Corp.
> idProduct 0x8000
> bcdDevice 0.04
> iManufacturer 0
> iProduct 0
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0002 1x 2 bytes
> bInterval 12
> Hub Descriptor:
> bLength 11
> bDescriptorType 41
> nNbrPorts 8
> wHubCharacteristic 0x0009
> Per-port power switching
> Per-port overcurrent protection
> TT think time 8 FS bits
> bPwrOn2PwrGood 0 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> DeviceRemovable 0x00 0x00
> PortPwrCtrlMask 0xff 0xff
> Hub Port Status:
> Port 1: 0000.0100 power
> Port 2: 0000.0100 power
> Port 3: 0000.0100 power
> Port 4: 0000.0100 power
> Port 5: 0000.0100 power
> Port 6: 0000.0100 power
> Port 7: 0000.0100 power
> Port 8: 0000.0100 power
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 0 Full speed (or root) hub
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0001
> Self Powered
>
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 0 Full speed (or root) hub
> bMaxPacketSize0 64
> idVendor 0x1d6b Linux Foundation
> idProduct 0x0002 2.0 root hub
> bcdDevice 3.11
> iManufacturer 3 Linux 3.11-trunk-amd64 ehci_hcd
> iProduct 2 EHCI Host Controller
> iSerial 1 0000:00:1d.0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 12
> Hub Descriptor:
> bLength 9
> bDescriptorType 41
> nNbrPorts 2
> wHubCharacteristic 0x000a
> No power switching (usb 1.0)
> Per-port overcurrent protection
> bPwrOn2PwrGood 10 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> DeviceRemovable 0x02
> PortPwrCtrlMask 0xff
> Hub Port Status:
> Port 1: 0000.0503 highspeed power enable connect
> Port 2: 0000.0100 power
> Device Status: 0x0001
> Self Powered
>
> Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 3.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 3
> bMaxPacketSize0 9
> idVendor 0x1d6b Linux Foundation
> idProduct 0x0003 3.0 root hub
> bcdDevice 3.11
> iManufacturer 3 Linux 3.11-trunk-amd64 xhci_hcd
> iProduct 2 xHCI Host Controller
> iSerial 1 0000:00:14.0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 31
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 12
> bMaxBurst 0
> Hub Descriptor:
> bLength 12
> bDescriptorType 42
> nNbrPorts 4
> wHubCharacteristic 0x000a
> No power switching (usb 1.0)
> Per-port overcurrent protection
> bPwrOn2PwrGood 10 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> bHubDecLat 0.0 micro seconds
> wHubDelay 0 nano seconds
> DeviceRemovable 0x00
> Hub Port Status:
> Port 1: 0000.02a0 5Gbps power Rx.Detect
> Port 2: 0000.02a0 5Gbps power Rx.Detect
> Port 3: 0000.02a0 5Gbps power Rx.Detect
> Port 4: 0000.02a0 5Gbps power Rx.Detect
> Binary Object Store Descriptor:
> bLength 5
> bDescriptorType 15
> wTotalLength 15
> bNumDeviceCaps 1
> SuperSpeed USB Device Capability:
> bLength 10
> bDescriptorType 16
> bDevCapabilityType 3
> bmAttributes 0x02
> Latency Tolerance Messages (LTM) Supported
> wSpeedsSupported 0x0008
> Device can operate at SuperSpeed (5Gbps)
> bFunctionalitySupport 3
> Lowest fully-functional device speed is SuperSpeed (5Gbps)
> bU1DevExitLat 10 micro seconds
> bU2DevExitLat 512 micro seconds
> Device Status: 0x0001
> Self Powered
>
> Bus 002 Device 013: ID 04f3:0089 Elan Microelectronics Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 8
> idVendor 0x04f3 Elan Microelectronics Corp.
> idProduct 0x0089
> bcdDevice 0.13
> iManufacturer 4 ELAN
> iProduct 14 Touchscreen
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 41
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 100mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 3 Human Interface Device
> bInterfaceSubClass 0 No Subclass
> bInterfaceProtocol 0 None
> iInterface 0
> HID Device Descriptor:
> bLength 9
> bDescriptorType 33
> bcdHID 1.10
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 925
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0020 1x 32 bytes
> bInterval 10
> Device Status: 0x0001
> Self Powered
>
> Bus 002 Device 004: ID 2232:1049
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> idVendor 0x2232
> idProduct 0x1049
> bcdDevice 0.43
> iManufacturer 3 Generic
> iProduct 1 WebCam SC-10HDP12B24N
> iSerial 2 200901010001
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 986
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 4 USB Camera
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 500mA
> Interface Association:
> bLength 8
> bDescriptorType 11
> bFirstInterface 0
> bInterfaceCount 2
> bFunctionClass 14 Video
> bFunctionSubClass 3 Video Interface Collection
> bFunctionProtocol 0
> iFunction 5 WebCam SC-10HDP12B24N
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 1 Video Control
> bInterfaceProtocol 0
> iInterface 5 WebCam SC-10HDP12B24N
> VideoControl Interface Descriptor:
> bLength 13
> bDescriptorType 36
> bDescriptorSubtype 1 (HEADER)
> bcdUVC 1.00
> wTotalLength 78
> dwClockFrequency 15.000000MHz
> bInCollection 1
> baInterfaceNr( 0) 1
> VideoControl Interface Descriptor:
> bLength 18
> bDescriptorType 36
> bDescriptorSubtype 2 (INPUT_TERMINAL)
> bTerminalID 1
> wTerminalType 0x0201 Camera Sensor
> bAssocTerminal 0
> iTerminal 0
> wObjectiveFocalLengthMin 0
> wObjectiveFocalLengthMax 0
> wOcularFocalLength 0
> bControlSize 3
> bmControls 0x00000004
> Auto-Exposure Priority
> VideoControl Interface Descriptor:
> bLength 11
> bDescriptorType 36
> bDescriptorSubtype 5 (PROCESSING_UNIT)
> Warning: Descriptor too short
> bUnitID 2
> bSourceID 1
> wMaxMultiplier 0
> bControlSize 2
> bmControls 0x0000157f
> Brightness
> Contrast
> Hue
> Saturation
> Sharpness
> Gamma
> White Balance Temperature
> Backlight Compensation
> Power Line Frequency
> White Balance Temperature, Auto
> iProcessing 0
> bmVideoStandards 0x 9
> None
> SECAM - 625/50
> VideoControl Interface Descriptor:
> bLength 9
> bDescriptorType 36
> bDescriptorSubtype 3 (OUTPUT_TERMINAL)
> bTerminalID 3
> wTerminalType 0x0101 USB Streaming
> bAssocTerminal 0
> bSourceID 4
> iTerminal 0
> VideoControl Interface Descriptor:
> bLength 27
> bDescriptorType 36
> bDescriptorSubtype 6 (EXTENSION_UNIT)
> bUnitID 4
> guidExtensionCode {8ca72912-b447-9440-b0ce-db07386fb938}
> bNumControl 2
> bNrPins 1
> baSourceID( 0) 2
> bControlSize 2
> bmControls( 0) 0x00
> bmControls( 1) 0x06
> iExtension 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0010 1x 16 bytes
> bInterval 6
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 0
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> VideoStreaming Interface Descriptor:
> bLength 15
> bDescriptorType 36
> bDescriptorSubtype 1 (INPUT_HEADER)
> bNumFormats 2
> wTotalLength 749
> bEndPointAddress 129
> bmInfo 0
> bTerminalLink 3
> bStillCaptureMethod 1
> bTriggerSupport 1
> bTriggerUsage 0
> bControlSize 1
> bmaControls( 0) 27
> bmaControls( 1) 27
> VideoStreaming Interface Descriptor:
> bLength 27
> bDescriptorType 36
> bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
> bFormatIndex 1
> bNumFrameDescriptors 10
> guidFormat {59555932-0000-1000-8000-00aa00389b71}
> bBitsPerPixel 16
> bDefaultFrameIndex 1
> bAspectRatioX 0
> bAspectRatioY 0
> bmInterlaceFlags 0x00
> Interlaced stream or variable: No
> Fields per frame: 2 fields
> Field 1 first: No
> Field pattern: Field 1 only
> bCopyProtect 0
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 1
> bmCapabilities 0x01
> Still image supported
> wWidth 640
> wHeight 480
> dwMinBitRate 73728000
> dwMaxBitRate 147456000
> dwMaxVideoFrameBufferSize 614400
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 2
> bmCapabilities 0x01
> Still image supported
> wWidth 160
> wHeight 120
> dwMinBitRate 4608000
> dwMaxBitRate 9216000
> dwMaxVideoFrameBufferSize 38400
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 3
> bmCapabilities 0x01
> Still image supported
> wWidth 320
> wHeight 180
> dwMinBitRate 13824000
> dwMaxBitRate 27648000
> dwMaxVideoFrameBufferSize 115200
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 4
> bmCapabilities 0x01
> Still image supported
> wWidth 320
> wHeight 240
> dwMinBitRate 18432000
> dwMaxBitRate 36864000
> dwMaxVideoFrameBufferSize 153600
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 5
> bmCapabilities 0x01
> Still image supported
> wWidth 352
> wHeight 288
> dwMinBitRate 24330240
> dwMaxBitRate 48660480
> dwMaxVideoFrameBufferSize 202752
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 6
> bmCapabilities 0x01
> Still image supported
> wWidth 424
> wHeight 240
> dwMinBitRate 24422400
> dwMaxBitRate 48844800
> dwMaxVideoFrameBufferSize 203520
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 7
> bmCapabilities 0x01
> Still image supported
> wWidth 640
> wHeight 360
> dwMinBitRate 55296000
> dwMaxBitRate 110592000
> dwMaxVideoFrameBufferSize 460800
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 38
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 8
> bmCapabilities 0x01
> Still image supported
> wWidth 848
> wHeight 480
> dwMinBitRate 65126400
> dwMaxBitRate 130252800
> dwMaxVideoFrameBufferSize 814080
> dwDefaultFrameInterval 500000
> bFrameIntervalType 3
> dwFrameInterval( 0) 500000
> dwFrameInterval( 1) 666666
> dwFrameInterval( 2) 1000000
> VideoStreaming Interface Descriptor:
> bLength 38
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 9
> bmCapabilities 0x01
> Still image supported
> wWidth 960
> wHeight 540
> dwMinBitRate 82944000
> dwMaxBitRate 165888000
> dwMaxVideoFrameBufferSize 1036800
> dwDefaultFrameInterval 500000
> bFrameIntervalType 3
> dwFrameInterval( 0) 500000
> dwFrameInterval( 1) 666666
> dwFrameInterval( 2) 1000000
> VideoStreaming Interface Descriptor:
> bLength 30
> bDescriptorType 36
> bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
> bFrameIndex 10
> bmCapabilities 0x01
> Still image supported
> wWidth 1280
> wHeight 720
> dwMinBitRate 147456000
> dwMaxBitRate 147456000
> dwMaxVideoFrameBufferSize 1843200
> dwDefaultFrameInterval 1000000
> bFrameIntervalType 1
> dwFrameInterval( 0) 1000000
> VideoStreaming Interface Descriptor:
> bLength 6
> bDescriptorType 36
> bDescriptorSubtype 13 (COLORFORMAT)
> bColorPrimaries 1 (BT.709,sRGB)
> bTransferCharacteristics 1 (BT.709)
> bMatrixCoefficients 4 (SMPTE 170M (BT.601))
> VideoStreaming Interface Descriptor:
> bLength 11
> bDescriptorType 36
> bDescriptorSubtype 6 (FORMAT_MJPEG)
> bFormatIndex 2
> bNumFrameDescriptors 10
> bFlags 1
> Fixed-size samples: Yes
> bDefaultFrameIndex 1
> bAspectRatioX 0
> bAspectRatioY 0
> bmInterlaceFlags 0x00
> Interlaced stream or variable: No
> Fields per frame: 1 fields
> Field 1 first: No
> Field pattern: Field 1 only
> bCopyProtect 0
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 1
> bmCapabilities 0x01
> Still image supported
> wWidth 640
> wHeight 480
> dwMinBitRate 73728000
> dwMaxBitRate 147456000
> dwMaxVideoFrameBufferSize 614400
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 2
> bmCapabilities 0x01
> Still image supported
> wWidth 160
> wHeight 120
> dwMinBitRate 4608000
> dwMaxBitRate 9216000
> dwMaxVideoFrameBufferSize 38400
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 3
> bmCapabilities 0x01
> Still image supported
> wWidth 320
> wHeight 180
> dwMinBitRate 13824000
> dwMaxBitRate 27648000
> dwMaxVideoFrameBufferSize 115200
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 4
> bmCapabilities 0x01
> Still image supported
> wWidth 320
> wHeight 240
> dwMinBitRate 18432000
> dwMaxBitRate 36864000
> dwMaxVideoFrameBufferSize 153600
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 5
> bmCapabilities 0x01
> Still image supported
> wWidth 352
> wHeight 288
> dwMinBitRate 24330240
> dwMaxBitRate 48660480
> dwMaxVideoFrameBufferSize 202752
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 6
> bmCapabilities 0x01
> Still image supported
> wWidth 424
> wHeight 240
> dwMinBitRate 24422400
> dwMaxBitRate 48844800
> dwMaxVideoFrameBufferSize 203520
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 7
> bmCapabilities 0x01
> Still image supported
> wWidth 640
> wHeight 360
> dwMinBitRate 55296000
> dwMaxBitRate 110592000
> dwMaxVideoFrameBufferSize 460800
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 8
> bmCapabilities 0x01
> Still image supported
> wWidth 848
> wHeight 480
> dwMinBitRate 97689600
> dwMaxBitRate 195379200
> dwMaxVideoFrameBufferSize 814080
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 9
> bmCapabilities 0x01
> Still image supported
> wWidth 960
> wHeight 540
> dwMinBitRate 124416000
> dwMaxBitRate 248832000
> dwMaxVideoFrameBufferSize 1036800
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 34
> bDescriptorType 36
> bDescriptorSubtype 7 (FRAME_MJPEG)
> bFrameIndex 10
> bmCapabilities 0x01
> Still image supported
> wWidth 1280
> wHeight 720
> dwMinBitRate 221184000
> dwMaxBitRate 442368000
> dwMaxVideoFrameBufferSize 1843200
> dwDefaultFrameInterval 333333
> bFrameIntervalType 2
> dwFrameInterval( 0) 333333
> dwFrameInterval( 1) 666666
> VideoStreaming Interface Descriptor:
> bLength 6
> bDescriptorType 36
> bDescriptorSubtype 13 (COLORFORMAT)
> bColorPrimaries 1 (BT.709,sRGB)
> bTransferCharacteristics 1 (BT.709)
> bMatrixCoefficients 4 (SMPTE 170M (BT.601))
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 1
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0080 1x 128 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 2
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 3
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0400 1x 1024 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 4
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0b00 2x 768 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 5
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x0c00 2x 1024 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 6
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x1380 3x 896 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 7
> bNumEndpoints 1
> bInterfaceClass 14 Video
> bInterfaceSubClass 2 Video Streaming
> bInterfaceProtocol 0
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous
> Usage Type Data
> wMaxPacketSize 0x1400 3x 1024 bytes
> bInterval 1
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 002 Device 003: ID 8087:07dc Intel Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 224 Wireless
> bDeviceSubClass 1 Radio Frequency
> bDeviceProtocol 1 Bluetooth
> bMaxPacketSize0 64
> idVendor 0x8087 Intel Corp.
> idProduct 0x07dc
> bcdDevice 0.01
> iManufacturer 0
> iProduct 0
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 177
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 100mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0000 1x 0 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0000 1x 0 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 1
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0009 1x 9 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0009 1x 9 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 2
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0011 1x 17 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0011 1x 17 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 3
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0019 1x 25 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0019 1x 25 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 4
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0021 1x 33 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0021 1x 33 bytes
> bInterval 1
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 5
> bNumEndpoints 2
> bInterfaceClass 224 Wireless
> bInterfaceSubClass 1 Radio Frequency
> bInterfaceProtocol 1 Bluetooth
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0031 1x 49 bytes
> bInterval 1
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 1
> Transfer Type Isochronous
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0031 1x 49 bytes
> bInterval 1
> Device Status: 0x0001
> Self Powered
>
> Bus 002 Device 017: ID 18d1:4ee2 Google Inc. Nexus 4 (debug)
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x18d1 Google Inc.
> idProduct 0x4ee2 Nexus 4 (debug)
> bcdDevice 2.28
> iManufacturer 1 LGE
> iProduct 2 Nexus 4
> iSerial 3 003cc47d9f95251e
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 62
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 500mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 0
> iInterface 4 MTP
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x01 EP 1 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x001c 1x 28 bytes
> bInterval 6
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 66
> bInterfaceProtocol 1
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 1 Single TT
> bMaxPacketSize0 64
> idVendor 0x1d6b Linux Foundation
> idProduct 0x0002 2.0 root hub
> bcdDevice 3.11
> iManufacturer 3 Linux 3.11-trunk-amd64 xhci_hcd
> iProduct 2 xHCI Host Controller
> iSerial 1 0000:00:14.0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 12
> Hub Descriptor:
> bLength 11
> bDescriptorType 41
> nNbrPorts 9
> wHubCharacteristic 0x000a
> No power switching (usb 1.0)
> Per-port overcurrent protection
> TT think time 8 FS bits
> bPwrOn2PwrGood 10 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> DeviceRemovable 0xb0 0x00
> PortPwrCtrlMask 0xff 0xff
> Hub Port Status:
> Port 1: 0000.0503 highspeed power enable connect
> Port 2: 0000.0100 power
> Port 3: 0000.0100 power
> Port 4: 0000.0103 power enable connect
> Port 5: 0000.0503 highspeed power enable connect
> Port 6: 0000.0100 power
> Port 7: 0000.0103 power enable connect
> Port 8: 0000.0100 power
> Port 9: 0000.0100 power
> Device Status: 0x0001
> Self Powered
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