sudo lsusb편집: 아래 telcoM 및 sudo dmesgtelcoM의 조언 에서 몇 가지 추가 정보를 추가했습니다 . 나는 작동하는 카메라와 Linux에서는 실행되지 않지만 Windows에서는 실행되는 동일한 제조업체의 유사한 카메라를 가지고 있습니다.
웹캠을 USB 포트에 연결하면 카메라로 감지되지 않습니다.
lsusb다음은 카메라를 연결하기 전의 출력입니다.
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0026 Intel Corp.
Bus 001 Device 003: ID 0c45:6720 Microdia Integrated_Webcam_HD
Bus 001 Device 002: ID 0a5c:5842 Broadcom Corp. 58200
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
장치를 연결한 후:
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 025: ID 32e4:8830
Bus 002 Device 024: ID 2109:8110 VIA Labs, Inc. Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0026 Intel Corp.
Bus 001 Device 003: ID 0c45:6720 Microdia Integrated_Webcam_HD
Bus 001 Device 002: ID 0a5c:5842 Broadcom Corp. 58200
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
장치가 추가된 것을 볼 수 있습니다. 달리기는 다음 sudo lsusb -D /dev/bus/usb/002/025을 제공합니다:
Device: ID 32e4:8830
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x32e4
idProduct 0x8830
bcdDevice 1.00
iManufacturer 2 HD USB Camera
iProduct 1 HD USB Camera
iSerial 3 2020040501
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x038d
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 256mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 HD USB Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 HD USB Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x006c
dwClockFrequency 15.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 3
guidExtensionCode {28f03370-6311-4a2e-ba2c-6890eb334016}
bNumControl 24
bNrPins 1
baSourceID( 0) 2
bControlSize 3
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0xff
iExtension 0
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {bd5321b4-d635-ca45-b203-4e0149b301bc}
bNumControl 32
bNrPins 1
baSourceID( 0) 3
bControlSize 4
bmControls( 0) 0x03
bmControls( 1) 0x80
bmControls( 2) 0x3f
bmControls( 3) 0x9f
iExtension 0
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 0x0000000e
Auto-Exposure Mode
Auto-Exposure Priority
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000177f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x00
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
bMaxBurst 0
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 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 0
INTERFACE CLASS: 0f 24 01 02 df 02 82 00 05 02 01 01 01 00 00
INTERFACE CLASS: 0b 24 06 01 0a 00 01 00 00 00 00
INTERFACE CLASS: 1e 24 07 01 00 40 06 b0 04 00 40 77 1b 00 40 77 1b 4d 9a 3a 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 02 00 c0 0c 90 09 00 40 4d 72 00 40 4d 72 4d da f3 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 03 00 20 0a 98 07 00 d0 14 48 00 d0 14 48 4d c8 99 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 04 00 00 08 00 06 00 00 00 2d 00 00 00 2d 4d 02 60 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 05 00 00 05 c0 03 00 00 94 11 00 00 94 11 4d 82 25 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 06 00 00 04 00 03 00 00 80 16 00 00 80 16 4d 02 18 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 07 00 20 03 58 02 00 a0 bb 0d 00 a0 bb 0d 4d a8 0e 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 08 00 80 02 e0 01 00 00 ca 08 00 00 ca 08 4d 62 09 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 09 00 40 01 f0 00 00 80 32 02 00 80 32 02 4d 5a 02 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 0a 00 40 06 b0 04 00 40 77 1b 00 40 77 1b 4d 9a 3a 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 26 24 03 00 08 c0 0c 90 09 20 0a 98 07 00 08 00 06 40 06 b0 04 00 05 c0 03 00 04 00 03 20 03 58 02 80 02 e0 01 00
INTERFACE CLASS: 1b 24 04 02 0a 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 40 06 b0 04 00 80 4f 12 00 80 4f 12 00 98 3a 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 02 00 c0 0c 90 09 00 80 3d 0f 00 80 3d 0f 00 d8 f3 00 40 4b 4c 00 01 40 4b 4c 00
INTERFACE CLASS: 1e 24 05 03 00 20 0a 98 07 00 90 6a 0e 00 90 6a 0e 00 c6 99 00 d5 dc 32 00 01 d5 dc 32 00
INTERFACE CLASS: 1e 24 05 04 00 00 08 00 06 00 00 00 09 00 00 00 09 00 00 60 00 d5 dc 32 00 01 d5 dc 32 00
INTERFACE CLASS: 1e 24 05 05 00 00 05 c0 03 00 00 b8 0b 00 00 b8 0b 00 80 25 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 06 00 00 04 00 03 00 00 80 07 00 00 80 07 00 00 18 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 07 00 20 03 58 02 00 a0 bb 0d 00 a0 bb 0d 00 a6 0e 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 08 00 80 02 e0 01 00 00 ca 08 00 00 ca 08 00 60 09 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 09 00 40 01 f0 00 00 80 32 02 00 80 32 02 00 58 02 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 0a 00 40 06 b0 04 00 80 4f 12 00 80 4f 12 00 98 3a 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 26 24 03 00 08 c0 0c 90 09 20 0a 98 07 00 08 00 06 40 06 b0 04 00 05 c0 03 00 04 00 03 20 03 58 02 80 02 e0 01 00
INTERFACE CLASS: 06 24 0d 01 01 04
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
HIRD Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000c
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 2
Lowest fully-functional device speed is High Speed (480Mbps)
bU1DevExitLat 4 micro seconds
bU2DevExitLat 231 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x000c
(Bus Powered)
U1 Enabled
U2 Enabled
실행하면 v4l2-ctl --list-devices방금 연결한 USB 카메라가 아닌 통합 카메라만 표시됩니다.
Integrated_Webcam_HD: Integrate (usb-0000:00:14.0-11):
/dev/video0
/dev/video1
udevadm monitor카메라를 연결한 상태에서 실행 하면 다음과 같이 표시됩니다.
KERNEL[6495.827968] add /devices/pci0000:00/0000:00:14.0/usb2/2-4 (usb)
KERNEL[6495.830203] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4:1.0 (usb)
KERNEL[6495.831815] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4:1.0 (usb)
KERNEL[6495.831900] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4 (usb)
UDEV [6495.838037] add /devices/pci0000:00/0000:00:14.0/usb2/2-4 (usb)
UDEV [6495.839827] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4:1.0 (usb)
UDEV [6495.841660] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4:1.0 (usb)
UDEV [6495.844529] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4 (usb)
KERNEL[6498.523402] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2 (usb)
KERNEL[6498.528879] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0 (usb)
KERNEL[6498.534396] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/media1 (media)
KERNEL[6498.534515] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/input/input34 (input)
KERNEL[6498.534826] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/input/input34/event13 (input)
KERNEL[6498.534898] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0 (usb)
KERNEL[6498.534955] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.1 (usb)
KERNEL[6498.535019] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2 (usb)
UDEV [6498.542294] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2 (usb)
UDEV [6498.545007] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.1 (usb)
UDEV [6498.545291] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0 (usb)
UDEV [6498.546363] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/media1 (media)
UDEV [6498.547609] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/input/input34 (input)
UDEV [6498.617161] add /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/input/input34/event13 (input)
UDEV [6498.621564] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0 (usb)
UDEV [6498.626172] bind /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2 (usb)
많은 작업이 있지만 video4linux 장치와는 아무런 관련이 없습니다.
관련 부분은 다음과 같습니다 sudo dmesg.
[93748.440857] usb 2-4: new SuperSpeed USB device number 24 using xhci_hcd
[93748.697861] usb 2-4: New USB device found, idVendor=2109, idProduct=8110, bcdDevice= 2.90
[93748.697873] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[93748.697877] usb 2-4: Product: USB3.0 Hub
[93748.697880] usb 2-4: Manufacturer: VIA Labs, Inc.
[93748.700414] hub 2-4:1.0: USB hub found
[93748.700656] hub 2-4:1.0: 2 ports detected
[93751.387006] usb 2-4.2: new SuperSpeed USB device number 25 using xhci_hcd
[93751.477156] usb 2-4.2: New USB device found, idVendor=32e4, idProduct=8830, bcdDevice= 1.00
[93751.477168] usb 2-4.2: New USB device strings: Mfr=2, Product=1, SerialNumber=3
[93751.477173] usb 2-4.2: Product: HD USB Camera
[93751.477176] usb 2-4.2: Manufacturer: HD USB Camera
[93751.477179] usb 2-4.2: SerialNumber: 2020040501
[93751.483406] usb 2-4.2: Found UVC 1.00 device HD USB Camera (32e4:8830)
[93751.488907] usb 2-4.2: No streaming interface found for terminal 5.
[93751.489209] input: HD USB Camera: HD USB Camera as /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.2/2-4.2:1.0/input/input41
이에 비해 아래는 작동하는 카메라를 연결했을 때 동일한 출력입니다. 첫 번째sudo lsusb -D /dev/bus/usb/001/014
Device: ID 32e4:8830
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.01
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x32e4
idProduct 0x8830
bcdDevice 1.00
iManufacturer 2 HD USB Camera
iProduct 1 HD USB Camera
iSerial 3 2020040498
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0381
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 256mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 HD USB Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 HD USB Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x006c
dwClockFrequency 15.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 3
guidExtensionCode {28f03370-6311-4a2e-ba2c-6890eb334016}
bNumControl 24
bNrPins 1
baSourceID( 0) 2
bControlSize 3
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0xff
iExtension 0
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {bd5321b4-d635-ca45-b203-4e0149b301bc}
bNumControl 32
bNrPins 1
baSourceID( 0) 3
bControlSize 4
bmControls( 0) 0x03
bmControls( 1) 0x80
bmControls( 2) 0x3f
bmControls( 3) 0x9f
iExtension 0
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 0x0000000e
Auto-Exposure Mode
Auto-Exposure Priority
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000177f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x00
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 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
INTERFACE CLASS: 0f 24 01 02 df 02 82 00 05 02 01 01 01 00 00
INTERFACE CLASS: 0b 24 06 01 0a 00 01 00 00 00 00
INTERFACE CLASS: 1e 24 07 01 00 40 06 b0 04 00 40 77 1b 00 40 77 1b 4d 9a 3a 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 02 00 c0 0c 90 09 00 40 4d 72 00 40 4d 72 4d da f3 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 03 00 20 0a 98 07 00 d0 14 48 00 d0 14 48 4d c8 99 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 04 00 00 08 00 06 00 00 00 2d 00 00 00 2d 4d 02 60 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 05 00 00 05 c0 03 00 00 94 11 00 00 94 11 4d 82 25 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 1e 24 07 06 00 00 04 00 03 00 00 80 16 00 00 80 16 4d 02 18 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 07 00 20 03 58 02 00 a0 bb 0d 00 a0 bb 0d 4d a8 0e 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 08 00 80 02 e0 01 00 00 ca 08 00 00 ca 08 4d 62 09 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 09 00 40 01 f0 00 00 80 32 02 00 80 32 02 4d 5a 02 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 07 0a 00 40 06 b0 04 00 40 77 1b 00 40 77 1b 4d 9a 3a 00 2a 2c 0a 00 01 2a 2c 0a 00
INTERFACE CLASS: 26 24 03 00 08 c0 0c 90 09 20 0a 98 07 00 08 00 06 40 06 b0 04 00 05 c0 03 00 04 00 03 20 03 58 02 80 02 e0 01 00
INTERFACE CLASS: 1b 24 04 02 0a 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 40 06 b0 04 00 80 4f 12 00 80 4f 12 00 98 3a 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 02 00 c0 0c 90 09 00 80 3d 0f 00 80 3d 0f 00 d8 f3 00 40 4b 4c 00 01 40 4b 4c 00
INTERFACE CLASS: 1e 24 05 03 00 20 0a 98 07 00 90 6a 0e 00 90 6a 0e 00 c6 99 00 d5 dc 32 00 01 d5 dc 32 00
INTERFACE CLASS: 1e 24 05 04 00 00 08 00 06 00 00 00 09 00 00 00 09 00 00 60 00 d5 dc 32 00 01 d5 dc 32 00
INTERFACE CLASS: 1e 24 05 05 00 00 05 c0 03 00 00 b8 0b 00 00 b8 0b 00 80 25 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 06 00 00 04 00 03 00 00 80 07 00 00 80 07 00 00 18 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 1e 24 05 07 00 20 03 58 02 00 a0 bb 0d 00 a0 bb 0d 00 a6 0e 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 08 00 80 02 e0 01 00 00 ca 08 00 00 ca 08 00 60 09 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 09 00 40 01 f0 00 00 80 32 02 00 80 32 02 00 58 02 00 15 16 05 00 01 15 16 05 00
INTERFACE CLASS: 1e 24 05 0a 00 40 06 b0 04 00 80 4f 12 00 80 4f 12 00 98 3a 00 40 42 0f 00 01 40 42 0f 00
INTERFACE CLASS: 26 24 03 00 08 c0 0c 90 09 20 0a 98 07 00 08 00 06 40 06 b0 04 00 05 c0 03 00 04 00 03 20 03 58 02 80 02 e0 01 00
INTERFACE CLASS: 06 24 0d 01 01 04
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x000c
bNumDeviceCaps 1
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
HIRD Link Power Management (LPM) Supported
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0002
(Bus Powered)
Remote Wakeup Enabled
유효한 카메라 의 경우 udevadm monitor:
KERNEL[6682.722836] add /devices/pci0000:00/0000:00:14.0/usb1/1-3 (usb)
KERNEL[6682.724650] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0 (usb)
KERNEL[6682.736729] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/video4linux/video2 (video4linux)
KERNEL[6682.736795] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/video4linux/video3 (video4linux)
KERNEL[6682.736898] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/media1 (media)
KERNEL[6682.737039] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input35 (input)
KERNEL[6682.737245] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input35/event13 (input)
KERNEL[6682.737326] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0 (usb)
KERNEL[6682.737401] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1 (usb)
KERNEL[6682.737487] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1 (usb)
KERNEL[6682.737556] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3 (usb)
UDEV [6682.761644] add /devices/pci0000:00/0000:00:14.0/usb1/1-3 (usb)
UDEV [6682.765782] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1 (usb)
UDEV [6682.765844] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0 (usb)
UDEV [6682.768518] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/media1 (media)
UDEV [6682.769022] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1 (usb)
UDEV [6682.769206] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/video4linux/video3 (video4linux)
UDEV [6682.769302] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/video4linux/video2 (video4linux)
UDEV [6682.769715] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input35 (input)
UDEV [6682.877079] add /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input35/event13 (input)
UDEV [6682.880687] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0 (usb)
UDEV [6682.891060] bind /devices/pci0000:00/0000:00:14.0/usb1/1-3 (usb)
마침내 sudo dmesg:
[92330.404900] usb 1-3: new high-speed USB device number 11 using xhci_hcd
[92330.578969] usb 1-3: New USB device found, idVendor=32e4, idProduct=8830, bcdDevice= 1.00
[92330.578980] usb 1-3: New USB device strings: Mfr=2, Product=1, SerialNumber=3
[92330.578985] usb 1-3: Product: HD USB Camera
[92330.578989] usb 1-3: Manufacturer: HD USB Camera
[92330.578992] usb 1-3: SerialNumber: 2020040498
[92330.583178] usb 1-3: Found UVC 1.00 device HD USB Camera (32e4:8830)
[92330.594432] input: HD USB Camera: HD USB Camera as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input39
가장 큰 차이점은 No streaming interface found for terminal 5dmesg의 줄인 것 같습니다.
이 USB 카메라용 v4l2 장치를 수동으로 생성하려면 어떻게 해야 합니까?
udev를 사용하여 카메라에 안정적인 이름을 할당하는 방법에 대한 많은 게시물을 읽었지만 모두 일부 비디오 장치가 먼저 생성되었다고 가정하는 것 같습니다. udev는 이벤트만 보기 때문에 내가 만든 모든 규칙은 SUBSYSTEM=="video4linux"효과가 없습니다 SUBSYSTEM=="usb".
어떤 통찰력이라도 대단히 감사하겠습니다... 감사합니다
답변1
lsusb -D /dev/bus/usb/002/015산출하다장치가 작동하려고 하는 것 같습니다.UVC 호환 비디오 장비- 하지만 장치 설명자에 한두 가지 버그가 있을 수 있다는 징후가 있습니다.
기기 ID 중 공급업체 ID 부분이 32e4:8830"Ailipu Technology Co., Ltd"로 표시됩니다.이 USB ID 검색 엔진에 따르면. 중국 심천에 본사를 둔 USB 카메라 제조사인 것으로 보입니다. 빠른 Google 검색에 따르면 자체 USB 카메라 브랜드 이름은 "ELP"인 것으로 보입니다.
lsusb먼저 루트로 명령을 실행하고 있습니까 ? 출력의 두 번째 줄에는 다음과 같이 표시됩니다.
Couldn't open device, some information will be missing
둘째, 나열된 비디오 제어 인터페이스 설명자 중 하나가 lsusb다음 경고를 발생시켰습니다.
Warning: Descriptor too short
UVC 사양 버전 1.5에 따르면 처리 장치의 비디오 제어 인터페이스 설명자의 크기는 설명자가 요구하는 11바이트가 아닌 13바이트 이상이어야 합니다.
셋째, Video Streaming 인터페이스의 Interface Descriptor에서 값은 bInterfaceProtocol0 입니다.
출력 끝에는 lsusb명령이 구문 분석할 수 없고 대신 16진수 덤프로 표시되는 데이터 묶음이 있습니다. 인터페이스 설명자 데이터에 일종의 오류가 있어 일부 내용이 왜곡될 수 있습니다. 이로 인해 장치를 사용하려고 할 때 문제가 발생할 수 있습니다.
4. 장치는 UVC 사양 버전 1.00을 선언합니다.
bcdUVC 1.00
이것UVC 사양 버전 1.50는 2012년에 출시되었으므로 이 정보가 정확하다면 기기가 상당히 오래되었거나 의도적으로 이전 버전의 사양을 사용하고 있는 것입니다.
(UVC 사양에 대한 가장 좋은 소스는 usb.org이지만 현재는UVC 사양 1.5 문서 패키지크기가 0바이트인 것 같습니다. )
설명자가 일반 언어 텍스트 문자열을 포함할 수 있는 모든 위치는 0으로 지정되어 해당 문자열이 포함되어 있지 않음을 나타냅니다. 이 카메라에 대한 설명은 최대한 일반적이고 인식할 수 없도록 작성된 것 같습니다.
Linux 드라이버가 카메라 인터페이스 설명자에서 디코딩해야 하는 중요한 정보 중 하나는 uvcvideo카메라 출력 데이터의 실제 비디오 형식입니다. 이 정보가 없으면 데이터는 의미가 없습니다.
sudo dmesg출력을 확인하십시오 . uvcvideo드라이버가 카메라를 인식하려고 할 때 오류 메시지를 출력하는 경우 해당 메시지를 찾을 수 있습니다. 이러한 메시지의 내용은 문제를 이해하는 데 도움이 될 수 있습니다.