Re: non-working UVC device 058f:5608

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Hi Johannes,

On Saturday 07 June 2014 23:51:43 Johannes Berg wrote:
> I just obtained a new (special-purpose) webcam, and it doesn't seem to
> work at all. On kernel torvals/linux.git next branch, it doesn't even
> really connect, on 3.13 (which I'm running on my laptop) I get errors
> like this:
> 
> xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of
> current TD
> 
> when running uvccapture. When running e.g. cheese or the like, the
> screen stays blank. uvccapture also reports:
> 
> ioctl querycontrol error 22
> 
> and then the kernel message repeats forever, while I can't even exit
> uvccapture unless I kill it hard, at which point I get
> 
> xhci_hcd 0000:00:14.0: Signal while waiting for configure endpoint command
> usb 1-3.4.4.3: Not enough bandwidth for altsetting 0
> 
> from the kernel.

This looks like low-level USB issues, CC'ing the linux-usb mailing list.

> The device really is detected as UVC, of course:
> 
> [ 3423.299311] usb 1-3.4.4.3: new high-speed USB device number 12 using
> xhci_hcd
> [ 3423.426280] usb 1-3.4.4.3: New USB device found, idVendor=058f,
> idProduct=5608
> [ 3423.426286] usb 1-3.4.4.3: New USB device strings: Mfr=3, Product=1,
> SerialNumber=0 [ 3423.426290] usb 1-3.4.4.3: Product: USB 2.0 PC Camera
> [ 3423.426293] usb 1-3.4.4.3: Manufacturer: Alcor Micro, Corp.
> [ 3423.432137] uvcvideo: Found UVC 1.00 device USB 2.0 PC Camera
> (058f:5608)
> [ 3423.435383] input: USB 2.0 PC Camera as
> /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.4/1-3.4.4/1-3.4.4.3/1-3.4.4.3
> :1.0/input/input36
> 
> (see also full lsusb below)
> 
> I see a device from the same manufacturer has a kernel driver as a
> vendor device but actually being UVC, but this one reports being UVC and
> doesn't really work.
> 
> Any thoughts? Just to rule out hardware defects I connected it to my
> windows 7 work machine and it works fine without even installing a
> driver.

Could you try connecting it to an EHCI controller instead of XHCI on a Linux  
machine ?

> I can arrange remote access to the device (maybe as a VM to be able to
> experiment with the kernel more easily?) if anyone wants it.
> 
> johannes
> 
> lsusb:
> 
> Bus 001 Device 012: ID 058f:5608 Alcor Micro Corp.
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 ?
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0        64
>   idVendor           0x058f Alcor Micro Corp.
>   idProduct          0x5608
>   bcdDevice            0.03
>   iManufacturer           3 Alcor Micro, Corp.
>   iProduct                1 USB 2.0 PC Camera
>   iSerial                 0
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          407
>     bNumInterfaces          2
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0x80
>       (Bus Powered)
>     MaxPower              200mA
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         0
>       bInterfaceCount         2
>       bFunctionClass         14 Video
>       bFunctionSubClass       3 Video Interface Collection
>       bFunctionProtocol       0
>       iFunction               1 USB 2.0 PC Camera
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass        14 Video
>       bInterfaceSubClass      1 Video Control
>       bInterfaceProtocol      0
>       iInterface              1 USB 2.0 PC Camera
>       VideoControl Interface Descriptor:
>         bLength                13
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdUVC               1.00
>         wTotalLength           85
>         dwClockFrequency       30.000000MHz
>         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           0x00000000
>       VideoControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID             3
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID               6
>         iTerminal               0
>       VideoControl Interface Descriptor:
>         bLength                 7
>         bDescriptorType        36
>         bDescriptorSubtype      4 (SELECTOR_UNIT)
>         bUnitID                 4
>         bNrInPins               1
>         baSource( 0)            1
>         iSelector               0
>       VideoControl Interface Descriptor:
>         bLength                11
>         bDescriptorType        36
>         bDescriptorSubtype      5 (PROCESSING_UNIT)
>       Warning: Descriptor too short
>         bUnitID                 5
>         bSourceID               4
>         wMaxMultiplier      32208
>         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     0x1b
>           None
>           NTSC - 525/60
>           SECAM - 625/50
>           NTSC - 625/50
>       VideoControl Interface Descriptor:
>         bLength                27
>         bDescriptorType        36
>         bDescriptorSubtype      6 (EXTENSION_UNIT)
>         bUnitID                 6
>         guidExtensionCode         {564c97a7-7ea7-904b-8cbf-1c71ec303000}
>         bNumControl            16
>         bNrPins                 1
>         baSourceID( 0)          5
>         bControlSize            2
>         bmControls( 0)       0xff
>         bmControls( 1)       0xff
>         iExtension              0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0010  1x 16 bytes
>         bInterval              15
>     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                            14
>         bDescriptorType                    36
>         bDescriptorSubtype                  1 (INPUT_HEADER)
>         bNumFormats                         1
>         wTotalLength                      227
>         bEndPointAddress                  129
>         bmInfo                              0
>         bTerminalLink                       3
>         bStillCaptureMethod                 2
>         bTriggerSupport                     0
>         bTriggerUsage                       0
>         bControlSize                        1
>         bmaControls( 0)                    27
>       VideoStreaming Interface Descriptor:
>         bLength                            27
>         bDescriptorType                    36
>         bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
>         bFormatIndex                        1
>         bNumFrameDescriptors                5
>         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                   0x00
>           Still image unsupported
>         wWidth                            640
>         wHeight                           480
>         dwMinBitRate                 73728000
>         dwMaxBitRate                147456000
>         dwMaxVideoFrameBufferSize      614400
>         dwDefaultFrameInterval         333332
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333332
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         2
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            320
>         wHeight                           240
>         dwMinBitRate                 18432000
>         dwMaxBitRate                 36864000
>         dwMaxVideoFrameBufferSize      153600
>         dwDefaultFrameInterval         333332
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333332
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         3
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            160
>         wHeight                           120
>         dwMinBitRate                  4608000
>         dwMaxBitRate                  9216000
>         dwMaxVideoFrameBufferSize       38400
>         dwDefaultFrameInterval         333332
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333332
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         4
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            352
>         wHeight                           288
>         dwMinBitRate                 24330240
>         dwMaxBitRate                 48660480
>         dwMaxVideoFrameBufferSize      202752
>         dwDefaultFrameInterval         333332
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333332
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            34
>         bDescriptorType                    36
>         bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
>         bFrameIndex                         5
>         bmCapabilities                   0x00
>           Still image unsupported
>         wWidth                            176
>         wHeight                           144
>         dwMinBitRate                  6082560
>         dwMaxBitRate                 12165120
>         dwMaxVideoFrameBufferSize       50688
>         dwDefaultFrameInterval         333332
>         bFrameIntervalType                  2
>         dwFrameInterval( 0)            333332
>         dwFrameInterval( 1)            666666
>       VideoStreaming Interface Descriptor:
>         bLength                            10
>         bDescriptorType                    36
>         bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
>         bEndpointAddress                    0
>         bNumImageSizePatterns               1
>         wWidth( 0)                        640
>         wHeight( 0)                       480
>         bNumCompressionPatterns             1
>       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     0x1400  3x 1024 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     0x1400  3x 1024 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     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)

-- 
Regards,

Laurent Pinchart

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