在运行 Fedora 34 的笔记本电脑上，检测到插入 USB UVC 摄像头，但将其识别为键盘。
cheese不将此相机视为输入设备，仅将内置网络摄像头视为输入设备。
如何才能正确检测到相机？
journalctl输出：
kernel: usb 2-2: new high-speed USB device number 5 using xhci_hcd
kernel: usb 2-2: New USB device found, idVendor=1a40, idProduct=0801, bcdDevice= 1.00
kernel: usb 2-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
kernel: usb 2-2: Product: USB 2.0 Hub
kernel: hub 2-2:1.0: USB hub found
kernel: hub 2-2:1.0: 4 ports detected
upowerd[1618]: treating change event as add on /sys/devices/pci0000:00/0000:00:14.0/usb2/2-2
kernel: usb 2-2.4: new high-speed USB device number 6 using xhci_hcd
kernel: usb 2-2.4: New USB device found, idVendor=2b16, idProduct=6689, bcdDevice= 6.19
kernel: usb 2-2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
kernel: usb 2-2.4: Product: DP 5M CAM
kernel: usb 2-2.4: Manufacturer: SunplusIT Inc
kernel: usb 2-2.4: SerialNumber: 01.00.00
kernel: uvcvideo: Found UVC 1.00 device DP 5M CAM (2b16:6689)
kernel: input: DP 5M CAM: DP 5M CAM as /devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.4/2-2.4:1.0/input/input22
mtp-probe[6920]: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.4"
mtp-probe[6920]: bus: 2, device: 6 was not an MTP device
/usr/libexec/gdm-x-session[2187]: (II) config/udev: Adding input device DP 5M CAM: DP 5M CAM (/dev/input/event19)
/usr/libexec/gdm-x-session[2187]: (**) DP 5M CAM: DP 5M CAM: Applying InputClass "evdev keyboard catchall"
/usr/libexec/gdm-x-session[2187]: (**) DP 5M CAM: DP 5M CAM: Applying InputClass "libinput keyboard catchall"
/usr/libexec/gdm-x-session[2187]: (**) DP 5M CAM: DP 5M CAM: Applying InputClass "system-keyboard"
/usr/libexec/gdm-x-session[2187]: (II) Using input driver 'libinput' for 'DP 5M CAM: DP 5M CAM'
/usr/libexec/gdm-x-session[2187]: (II) systemd-logind: got fd for /dev/input/event19 13:83 fd 76 paused 0
/usr/libexec/gdm-x-session[2187]: (**) DP 5M CAM: DP 5M CAM: always reports core events
/usr/libexec/gdm-x-session[2187]: (**) Option "Device" "/dev/input/event19"
/usr/libexec/gdm-x-session[2187]: (**) Option "_source" "server/udev"
/usr/libexec/gdm-x-session[2187]: (II) event19 - DP 5M CAM: DP 5M CAM: is tagged by udev as: Keyboard
/usr/libexec/gdm-x-session[2187]: (II) event19 - DP 5M CAM: DP 5M CAM: device is a keyboard
/usr/libexec/gdm-x-session[2187]: (II) event19 - DP 5M CAM: DP 5M CAM: device removed
/usr/libexec/gdm-x-session[2187]: (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.4/2-2.4:1.0/input/input22/event19"
/usr/libexec/gdm-x-session[2187]: (II) XINPUT: Adding extended input device "DP 5M CAM: DP 5M CAM" (type: KEYBOARD, id 16)
/usr/libexec/gdm-x-session[2187]: (**) Option "xkb_layout" "us,ca"
/usr/libexec/gdm-x-session[2187]: (**) Option "xkb_variant" ",multix"
/usr/libexec/gdm-x-session[2187]: (II) event19 - DP 5M CAM: DP 5M CAM: is tagged by udev as: Keyboard
/usr/libexec/gdm-x-session[2187]: (II) event19 - DP 5M CAM: DP 5M CAM: device is a keyboard
mtp-probe[6952]: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.4"
mtp-probe[6952]: bus: 2, device: 6 was not an MTP device
/usr/libexec/gdm-x-session[6954]: The XKEYBOARD keymap compiler (xkbcomp) reports:
/usr/libexec/gdm-x-session[6954]: > Error: Key <MDSW> added to map for multiple modifiers
/usr/libexec/gdm-x-session[6954]: > Using Mod3, ignoring Mod5.
/usr/libexec/gdm-x-session[6954]: > Warning: Could not resolve keysym XF86FullScreen
/usr/libexec/gdm-x-session[6954]: Errors from xkbcomp are not fatal to the X server
lsusb -vv输出：
Bus 002 Device 010: ID 2b16:6689 SunplusIT Inc DP 5M CAM
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x2b16
idProduct 0x6689
bcdDevice 6.19
iManufacturer 1 SunplusIT Inc
iProduct 2 DP 5M CAM
iSerial 3 01.00.00
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x021f
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 4 DP 5M CAM
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 4 DP 5M CAM
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x006d
dwClockFrequency 48.000000MHz
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 0x0000000a
Auto-Exposure Mode
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
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 0x1d
None
PAL - 625/50
SECAM - 625/50
NTSC - 625/50
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 3
guidExtensionCode {0fb885c3-68c2-4547-90f7-8f47579d95fc}
bNumControls 5
bNrInPins 1
baSourceID( 0) 2
bControlSize 4
bmControls( 0) 0x1f
bmControls( 1) 0x00
bmControls( 2) 0x00
bmControls( 3) 0x00
iExtension 0
VideoControl Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {63610682-5070-49ab-b8cc-b3855e8d221d}
bNumControls 25
bNrInPins 1
baSourceID( 0) 3
bControlSize 4
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0x77
bmControls( 3) 0x07
iExtension 0
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
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 0x00d3
bEndPointAddress 129
bmInfo 0
bTerminalLink 5
bStillCaptureMethod 1
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 4
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 1
bNumFrameDescriptors 6
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 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x01
Still image supported
wWidth 1920
wHeight 1080
dwMinBitRate 829440000
dwMaxBitRate 829440000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x01
Still image supported
wWidth 2592
wHeight 1944
dwMinBitRate 1612431360
dwMaxBitRate 1612431360
dwMaxVideoFrameBufferSize 10077696
dwDefaultFrameInterval 500000
bFrameIntervalType 1
dwFrameInterval( 0) 500000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x01
Still image supported
wWidth 1280
wHeight 720
dwMinBitRate 368640000
dwMaxBitRate 368640000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x01
Still image supported
wWidth 640
wHeight 480
dwMinBitRate 122880000
dwMaxBitRate 122880000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x01
Still image supported
wWidth 1600
wHeight 1200
dwMinBitRate 768000000
dwMaxBitRate 768000000
dwMaxVideoFrameBufferSize 3840000
dwDefaultFrameInterval 400000
bFrameIntervalType 1
dwFrameInterval( 0) 400000
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 6
bmCapabilities 0x01
Still image supported
wWidth 2048
wHeight 1936
dwMinBitRate 1268776960
dwMaxBitRate 1268776960
dwMaxVideoFrameBufferSize 7929856
dwDefaultFrameInterval 500000
bFrameIntervalType 1
dwFrameInterval( 0) 500000
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 0x00c0 1x 192 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 0x0180 1x 384 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 0x0200 1x 512 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 0x0280 1x 640 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 0x0320 1x 800 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 0x03b0 1x 944 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 0x0a80 2x 640 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 8
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 0x0b20 2x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 9
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 0x0be0 2x 992 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 10
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 0x13c0 3x 960 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 11
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 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
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)
答案1
我遇到了同样的错误，并且在 X11 配置中添加了几个忽略。
首先，使用命令检查凸轮是否被列为键盘xinput list，然后创建一个名为的文件/etc/X11/xorg.conf.d/00-fix-cam.conf（或任何扩展名为conf的文件名）
在里面添加这些行：
Section "InputClass"
Identifier "none"
MatchVendor "Chicony USB2.0 Camera: Chicony"
Option "Ignore" "true"
EndSection
Section "InputClass"
Identifier "none"
MatchProduct "Chicony USB2.0 Camera: Chicony"
Option "Ignore" "true"
EndSection
要获取正确的供应商和产品名称，请使用命令并相应地lsub -vv替换值（或者更好地使用命令或命令）MatchVendorMatchProducthwinfo --usbudevadm info -a /dev/input/by-id/*
如果标识符
none不起作用，请尝试使用标识符system-keyboard、keyboard和libinputcatchall
有些名称末尾包含额外的空格，请尝试将其添加到忽略配置中
重新启动 X 会话并运行命令xinput list以检查摄像头现在是否已被排除为键盘输入。
重要的：尝试启用 SSH 并从另一台计算机进行远程连接，以防新配置中断 X 会话并且您失去控制台访问权限。
笔记：还要确保摄像头已激活（有些摄像头有物理按钮或键盘快捷键来激活和停用）
答案2
嗯，原则上它被识别为网络摄像头：
kernel: uvcvideo: Found UVC 1.00 device DP 5M CAM (2b16:6689)
这是还如果相机有“快照”键，则被识别为键盘并不奇怪。我的相机也会发生同样的情况。
那么问题就变成了为什么除了初步识别之外uvcvideo，cheese却找不到它。您发布的摘录下面是否有任何与 UVC 或视频设备相关的消息？可能是错误信息？
您看到有多少台设备ls /dev/video*？如果你lsusb -vv为相机做一些特别的事情吗？