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Logitech c920e -- v4l2-ctl --list-devices\ /dev/video0 장치를 열 수 없습니다. 종료합니다.

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Logitech c920e -- v4l2-ctl --list-devices\ /dev/video0 장치를 열 수 없습니다. 종료합니다.

방금 logi c920e를 구입했는데 안타깝게도 작동하지 않는 것 같습니다.

다른 사용자의 질문은 도움이 되지 않았으며 대부분은 내장 캠과 관련이 있었지만 내 경우는 그렇지 않았습니다. Fedora, Linux Mint, Manjaro(현재 OS)에서 테스트했지만 아무것도 작동하지 않는 것 같습니다.

Windows 10 설치를 시도했는데 성공했습니다.

! 웹캠은 치즈, obs 또는 vlc에 관한 정보를 더 이상 표시하지 않습니다. 아직 더 많은 정보를 찾고 있으며 상황이 발전하면 여기에 추가하겠습니다.

dmesg |

dmesg | tail                  
[   82.553845] audit: type=1101 audit(1637396188.080:103): pid=2438 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:accounting grantors=pam_unix,pam_permit,pam_time acct="kaiqueam" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   82.554104] audit: type=1110 audit(1637396188.080:104): pid=2438 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:setcred grantors=pam_faillock,pam_permit,pam_faillock acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   82.557650] audit: type=1105 audit(1637396188.083:105): pid=2438 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:session_open grantors=pam_limits,pam_unix,pam_permit acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   82.565367] audit: type=1106 audit(1637396188.090:106): pid=2438 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:session_close grantors=pam_limits,pam_unix,pam_permit acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   82.565459] audit: type=1104 audit(1637396188.090:107): pid=2438 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:setcred grantors=pam_faillock,pam_permit,pam_faillock acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   94.652318] audit: type=1101 audit(1637396200.177:108): pid=2457 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:accounting grantors=pam_unix,pam_permit,pam_time acct="kaiqueam" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   94.652622] audit: type=1110 audit(1637396200.177:109): pid=2457 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:setcred grantors=pam_faillock,pam_permit,pam_env,pam_faillock acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   94.656734] audit: type=1105 audit(1637396200.183:110): pid=2457 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:session_open grantors=pam_limits,pam_unix,pam_permit acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   94.665469] audit: type=1106 audit(1637396200.190:111): pid=2457 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:session_close grantors=pam_limits,pam_unix,pam_permit acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'
[   94.665608] audit: type=1104 audit(1637396200.190:112): pid=2457 uid=1000 auid=1000 ses=2 subj==unconfined msg='op=PAM:setcred grantors=pam_faillock,pam_permit,pam_env,pam_faillock acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/2 res=success'

v4l2-ctl -- 장치 나열

v4l2-ctl --list-devices                                 
Cannot open device /dev/video0, exiting.

v4l2-ctl --all 
Cannot open device /dev/video0, exiting.

sudo dmesg | grep -i 카메라 -> 아무것도 반환하지 않음

sudo dmesg | grep -i camera

LSSB

lsusb
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 006: ID 8087:0025 Intel Corp. Wireless-AC 9260 Bluetooth Adapter
Bus 005 Device 004: ID 1462:7b85 Micro Star International PRO CARBON   
Bus 005 Device 003: ID 046d:083f Logitech, Inc. USB VSNx      
Bus 005 Device 002: ID 05ac:024f Apple, Inc. Aluminium Keyboard (ANSI)
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
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 003: ID 046d:c53f Logitech, Inc. USB Receiver
Bus 001 Device 002: ID 0951:1666 Kingston Technology DataTraveler 100 G3/G4/SE9 G2/50
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lspci

❯ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) I/O Memory Management Unit
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge
00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 59)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7
01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
03:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset USB 3.1 XHCI Controller (rev 01)
03:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset SATA Controller (rev 01)
03:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Bridge (rev 01)
20:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
20:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
20:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)
21:00.0 Network controller: Intel Corporation Wireless-AC 9260 (rev 29)
22:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)
26:00.0 VGA compatible controller: NVIDIA Corporation TU104 [GeForce RTX 2060] (rev a1)
26:00.1 Audio device: NVIDIA Corporation TU104 HD Audio Controller (rev a1)
26:00.2 USB controller: NVIDIA Corporation TU104 USB 3.1 Host Controller (rev a1)
26:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU104 USB Type-C UCSI Controller (rev a1)
27:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function
27:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor
27:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0 Host controller
28:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function
28:00.2 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51)
28:00.3 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller

lsmod

❯ lsmod
Module                  Size  Used by
rfcomm                 90112  16
ccm                    20480  6
cmac                   16384  3
algif_hash             16384  1
algif_skcipher         16384  1
af_alg                 32768  6 algif_hash,algif_skcipher
bnep                   32768  2
btusb                  69632  0
btrtl                  28672  1 btusb
btbcm                  20480  1 btusb
btintel                32768  1 btusb
bluetooth             733184  43 btrtl,btintel,btbcm,bnep,btusb,rfcomm
ecdh_generic           16384  2 bluetooth
ecc                    40960  1 ecdh_generic
hid_logitech_hidpp     53248  0
joydev                 28672  0
mousedev               24576  0
hid_apple              16384  0
hid_logitech_dj        28672  0
uas                    32768  0
qrtr                   20480  4
ns                     36864  1 qrtr
iwlmvm                495616  0
usb_storage            81920  2 uas
usbhid                 65536  1 hid_logitech_dj
apple_mfi_fastcharge    20480  0
mac80211             1171456  1 iwlmvm
libarc4                16384  1 mac80211
iwlwifi               430080  1 iwlmvm
cfg80211             1044480  3 iwlmvm,iwlwifi,mac80211
igb                   266240  0
i2c_algo_bit           16384  1 igb
rfkill                 32768  9 bluetooth,cfg80211
dca                    16384  1 igb
intel_rapl_msr         20480  0
uinput                 20480  0
squashfs               69632  8
intel_rapl_common      28672  1 intel_rapl_msr
nvidia_drm             73728  9
edac_mce_amd           32768  0
snd_hda_codec_realtek   155648  1
nvidia_modeset       1155072  24 nvidia_drm
kvm_amd               139264  0
snd_hda_codec_generic    98304  1 snd_hda_codec_realtek
snd_hda_codec_hdmi     73728  1
ccp                   118784  1 kvm_amd
ledtrig_audio          16384  1 snd_hda_codec_generic
ucsi_ccg               24576  0
typec_ucsi             49152  1 ucsi_ccg
rng_core               16384  1 ccp
snd_hda_intel          57344  5
typec                  65536  1 typec_ucsi
snd_intel_dspcfg       28672  1 snd_hda_intel
kvm                  1036288  1 kvm_amd
nvidia              36958208  1376 nvidia_modeset
snd_intel_sdw_acpi     20480  1 snd_intel_dspcfg
snd_hda_codec         176128  4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
irqbypass              16384  1 kvm
vfat                   24576  1
crct10dif_pclmul       16384  1
crc32_pclmul           16384  0
roles                  16384  1 typec_ucsi
wmi_bmof               16384  0
fat                    86016  1 vfat
snd_hda_core          110592  5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
ghash_clmulni_intel    16384  0
drm_kms_helper        294912  1 nvidia_drm
snd_hwdep              16384  1 snd_hda_codec
aesni_intel           380928  8
snd_pcm               147456  4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
cec                    73728  1 drm_kms_helper
crypto_simd            16384  1 aesni_intel
cryptd                 28672  3 crypto_simd,ghash_clmulni_intel
rapl                   16384  0
syscopyarea            16384  1 drm_kms_helper
snd_timer              45056  1 snd_pcm
sysfillrect            16384  1 drm_kms_helper
sysimgblt              16384  1 drm_kms_helper
snd                   114688  18 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm
pcspkr                 16384  0
k10temp                16384  0
sp5100_tco             20480  0
i2c_piix4              28672  0
soundcore              16384  1 snd
fb_sys_fops            16384  1 drm_kms_helper
i2c_nvidia_gpu         16384  0
wmi                    36864  1 wmi_bmof
drm                   589824  13 drm_kms_helper,nvidia,nvidia_drm
gpio_amdpt             20480  0
mac_hid                16384  0
pinctrl_amd            32768  0
gpio_generic           20480  1 gpio_amdpt
acpi_cpufreq           32768  0
agpgart                45056  1 drm
loop                   40960  16
ipmi_devintf           20480  0
ipmi_msghandler        73728  1 ipmi_devintf
sg                     40960  0
fuse                  167936  7
crypto_user            20480  0
ip_tables              32768  0
x_tables               53248  1 ip_tables
ext4                  929792  2
crc32c_generic         16384  0
crc16                  16384  2 bluetooth,ext4
mbcache                16384  1 ext4
jbd2                  151552  1 ext4
crc32c_intel           24576  4
xhci_pci               20480  0

obs를 보면 리눅스가 이것을 마이크라고 생각할 가능성이 있나요?

obs_image 참조, 어쩌면 마이크라고 생각할까요?

❯ lsmod|grep uvcvideo
uvcvideo              118784  0
videobuf2_vmalloc      20480  1 uvcvideo
videobuf2_v4l2         36864  1 uvcvideo
videobuf2_common       69632  4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
videodev              282624  3 videobuf2_v4l2,uvcvideo,videobuf2_common
mc                     65536  4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common

또한 모듈을 다시 로드해 보았습니다.

sudo modprobe uvcvideo

위의 이전 로그에 따르면 아직 장치가 없으며 변경된 사항도 없습니다.

** 달리기:

sudo modprobe v4l2loopback

당시 존재하지 않는 de video0을 생성합니다.

❯ v4l2-ctl --list-devices  
Dummy video device (0x0000) (platform:v4l2loopback-000):
        /dev/video0

dev에 LS를 제공합니다. modprobe 앞에는 video0이 없습니다.

❯ ls            
ashmem           hpet            nvme0      stdout  tty31  tty56   ttyS22        vcs3
autofs           hugepages       nvme0n1    tty     tty32  tty57   ttyS23        vcs4
block            hwrng           nvme0n1p1  tty0    tty33  tty58   ttyS24        vcs5
bsg              input           nvme0n1p2  tty1    tty34  tty59   ttyS25        vcs6
btrfs-control    kmsg            nvme0n1p3  tty10   tty35  tty6    ttyS26        vcsa
bus              kvm             nvram      tty11   tty36  tty60   ttyS27        vcsa1
char             lightnvm        port       tty12   tty37  tty61   ttyS28        vcsa2
console          log             ppp        tty13   tty38  tty62   ttyS29        vcsa3
core             loop0           pps0       tty14   tty39  tty63   ttyS3         vcsa4
cpu              loop1           psaux      tty15   tty4   tty7    ttyS30        vcsa5
cpu_dma_latency  loop2           ptmx       tty16   tty40  tty8    ttyS31        vcsa6
cuse             loop3           ptp0       tty17   tty41  tty9    ttyS4         vcsu
disk             loop4           pts        tty18   tty42  ttyS0   ttyS5         vcsu1
dma_heap         loop5           random     tty19   tty43  ttyS1   ttyS6         vcsu2
dri              loop6           rfkill     tty2    tty44  ttyS10  ttyS7         vcsu3
fb0              loop7           rtc        tty20   tty45  ttyS11  ttyS8         vcsu4
fd               loop8           rtc0       tty21   tty46  ttyS12  ttyS9         vcsu5
full             loop-control    sda        tty22   tty47  ttyS13  udmabuf       vcsu6
fuse             mapper          sda1       tty23   tty48  ttyS14  uhid          vfio
gpiochip0        mem             sdb        tty24   tty49  ttyS15  uinput        vga_arbiter
gpiochip1        mqueue          sg0        tty25   tty5   ttyS16  urandom       vhci
hidraw0          net             sg1        tty26   tty50  ttyS17  usb           vhost-net
hidraw1          ng0n1           shm        tty27   tty51  ttyS18  userio        vhost-vsock
hidraw2          null            snapshot   tty28   tty52  ttyS19  v4l2loopback  video0
hidraw3          nvidia0         snd        tty29   tty53  ttyS2   vcs           watchdog
hidraw4          nvidiactl       stderr     tty3    tty54  ttyS20  vcs1          watchdog0
hidraw5          nvidia-modeset  stdin      tty30   tty55  ttyS21  vcs2          zero

그러나 그것은 작동하지 않았습니다. 달리기:

❯ gphoto2 --stdout --capture-movie | ffmpeg -i - -c:v rawvideo -f v4l2 /dev/video0
ffmpeg version n4.4.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11.1.0 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc --enable-shared --enable-version3
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100

*** Error ***              
Could not detect any camera
*** Error (-105: 'Unknown model') ***       

pipe:: Invalid data found when processing input

답변1

이전에 Logitech HD Pro C920에는 082d, 0892, 08e5와 같은 여러 가지 USB 제품 ID가 있었는데, 이는 모델 번호는 동일하더라도 카메라 내부의 다른 버전을 나타낼 수 있습니다. 이제 웹캠의 제품 ID는 083f이며 Linux USB ID 저장소에서는 전혀 알 수 없습니다.https://usb-ids.gowdy.us/read/UD/046d

또한 표시되는 텍스트가 lsusb약간 이상합니다 Logitech, Inc. USB VSNx.

불행하게도 c920e는 드라이버가 아직 인식하지 못하는 또 다른 새로운 버전일 수도 있습니다 uvcvideo. 또는 카메라가 일반 웹캠 장치로 나타나기 전에 재부팅할 때마다 운영 체제에서 카메라에 펌웨어를 보내야 할 수도 있습니다.

다양한 Logitech C920 변형 비교이 글은 Windows 사용자의 관점에서 작성되었지만 이전 버전과 비교하여 C920e에 몇 가지 기술적 차이가 있을 수 있음을 확인시켜 주는 것 같습니다. 예를 들어 마이크는 기본적으로 비활성화되어 있습니다.

드라이버 uvcvideo는 실제로 적절한 USB 장치 클래스에 속한다고 주장하는 모든 장치에 연결되지만 일부 카메라는 일반적인 방법을 사용하여 감지할 수 없거나 특별한 처리가 필요한 몇 가지 문제가 있기 때문에 특정 카메라도 인식합니다.

드라이버가 카메라를 감지하지 못하는 것 같으므로 카메라가 비표준 방식으로 USB 버스에 표시될 수 있으며, 이는 uvcvideo드라이버 유지 관리 담당자가 특별히 처리해야 합니다.

Logitech C922를 사용하여 를 실행하면 lsusb -d 046d:085c -v |grep -e Class -e Config다음과 같은 결과가 나타납니다.

  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bNumConfigurations      1
  Configuration Descriptor:
    bConfigurationValue     1
    iConfiguration          0 
      bFunctionClass         14 Video
      bFunctionSubClass       3 Video Interface Collection
      bInterfaceClass        14 Video
      bInterfaceSubClass      1 Video Control
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bFunctionClass          1 Audio
      bFunctionSubClass       2 Streaming
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
        wChannelConfig     0x0003
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 
  bNumConfigurations      1

오디오 및 비디오 제어 인터페이스와 오디오 및 비디오를 위한 다양한 스트리밍 인터페이스가 있다는 점에 유의하세요.

을 실행하면 lsusb -d 046d:083f -v | grep -e Class -e Config비슷한 결과가 나오나요?

값이 1이 아닌 경우 bNumConfigurations카메라를 카메라로 사용하기 전에 대체 USB 구성으로 전환해야 할 수도 있습니다.

(일부 USB 장치는 처음에 장치용 Windows/Mac 드라이버가 포함된 USB 저장 장치로 나타납니다. 그런 다음 드라이버는 장치를 대체 구성으로 전환하여 실제 장치 인터페이스를 드러냅니다.)

답변2

플러그를 뽑았다가 다시 꽂을 수도 있습니다. 때때로 그것은 나에게 효과적입니다. 제가 하는 또 다른 일은 백그라운드에서 실행되는 일부 기능을 끄는 것입니다. 즉

  1. ps aux | grep python3
  2. sudo kill -9 <the id given besides the roots>

관련 정보