dmesg snippets
Kernel 4.4.0-45 - camera is working
.
[ 34.928951] usb 1-3: new high-speed USB device number 5 using xhci_hcd
[ 35.154765] usb 1-3: New USB device found, idVendor=eb1a, idProduct=2771
[ 35.154767] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 35.155444] uvcvideo: Found UVC 1.00 device <unnamed> (eb1a:2771)
[ 35.156628] input: UVC Camera (eb1a:2771) as
/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input17
[ 35.259274] uvcvideo: Failed to query (GET_CUR) UVC control 8 on unit 1: -32
(exp. 1).
.
Note: camera is working although uvcvideo fails to query UVC control 8
4.4.0-173 - camera is not working
.
[ 41.426626] usb 1-3: new high-speed USB device number 5 using xhci_hcd
[ 41.621247] usb 1-3: config 1 interface 1 altsetting 0 endpoint 0x82 has
wMaxPacketSize 0, skipping
[ 41.621259] usb 1-3: New USB device found, idVendor=eb1a, idProduct=2771
[ 41.621260] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 41.621898] uvcvideo: Found UVC 1.00 device <unnamed> (eb1a:2771)
[ 41.621963] uvcvideo: No streaming interface found for terminal 2.
[ 41.622019] input: UVC Camera (eb1a:2771) as
/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input16
.
Looks like something is going wrong with endpoint 0x82 during
enumeration
lsusb show identical information with both kernels:
$ sudo lsusb -v -d eb1a:2771
Bus 001 Device 005: ID eb1a:2771 eMPIA Technology, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0xeb1a eMPIA Technology, Inc.
idProduct 0x2771
bcdDevice 3.08
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 358
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
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 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 0
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 80
dwClockFrequency 6.000000MHz
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 0x000200a2
Auto-Exposure Mode
Focus (Absolute)
Iris (Absolute)
Focus, Auto
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000147f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x1d
None
PAL - 625/50
SECAM - 625/50
NTSC - 625/50
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {2652215a-8932-5641-894a-5c557cdf9664}
bNumControl 4
bNrPins 1
baSourceID( 0) 3
bControlSize 4
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0xff
bmControls( 3) 0xff
iExtension 0
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 9
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0000 1x 0 bytes
bInterval 1
INTERFACE CLASS: 0e 24 01 01 d0 00 82 00 02 02 01 00 01 00
INTERFACE CLASS: 1b 24 04 01 05 59 55 59 32 00 00 10 00 80 00 00 aa 00
38 9b 71 10 01 00 00 00 00
INTERFACE CLASS: 1e 24 05 01 00 80 02 e0 01 00 00 08 ca 00 00 08 ca 00
00 3c 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 02 00 20 03 58 02 d0 00 06 dd d0 00 06 dd 00
00 3c 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 05 03 00 00 05 00 04 00 00 0a 00 00 00 0a 00 00
00 3c 00 d0 12 13 00 01 d0 12 13 00
INTERFACE CLASS: 1e 24 05 04 00 40 06 b0 04 80 00 0a fc 80 00 0a fc 00
00 3c 00 6a 6e 19 00 01 6a 6e 19 00
INTERFACE CLASS: 1e 24 05 01 00 80 02 e0 01 00 00 08 ca 00 00 08 ca 00
00 3c 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 0b 24 03 00 01 40 06 b0 04 01 00
INTERFACE CLASS: 06 24 0d 00 00 00
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 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x13fc 3x 1020 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)
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https://bugs.launchpad.net/bugs/1861344
Title:
uvcvideo: IPEVO Ziggi-HD document camera stops working on kernel
4.4.0-171
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