我的 Dell Inspiron 13 安装了 Ubuntu 18.04。我的集成网络摄像头无法与 zoom、Google Meeting、Microsoft Team、Skype 或任何此类应用程序配合使用。大约 3 个月前它可以用。我现在不记得在这期间我对我的笔记本电脑做了什么。我不知道什么信息有帮助。但是，我在下面列出了我尝试过的方法。任何帮助都将不胜感激。似乎没有任何东西可以物理阻挡网络摄像头。
尝试使用 cheese 时，屏幕显示黑屏并出现错误：未找到设备
尝试使用 guvcview 时，我在终端上收到以下错误：
GUVCVIEW: version 2.0.5
GUVCVIEW: couldn't open /home/bsarma/.config/guvcview2/video0 for read: No such file or directory
V4L2_CORE: ERROR opening V4L interface: No such file or directory
GUVCVIEW (1): Guvcview error
no video device found
(guvcview:6035): Gtk-WARNING **: 16:47:40.052: Theme parsing error: <data>:1:17: not a number
(guvcview:6035): Gtk-WARNING **: 16:47:40.052: Theme parsing error: <data>:1:31: Using Pango syntax for the font: style property is deprecated; please use CSS syntax
(guvcview:6035): Gtk-WARNING **: 16:47:40.052: Theme parsing error: <data>:1:17: not a number
(guvcview:6035): Gtk-WARNING **: 16:47:40.052: Theme parsing error: <data>:1:32: Using Pango syntax for the font: style property is deprecated; please use CSS syntax
Gtk-Message: 16:47:40.063: GtkDialog mapped without a transient parent. This is discouraged.
- lsusb 的输出：
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 27c6:5301
Bus 001 Device 003: ID 8087:0a2a Intel Corp.
Bus 001 Device 002: ID 046d:c542 Logitech, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
- lspci 的输出：
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1e.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO UART Controller #0 (rev 21)
00:1e.4 SD Host controller: Intel Corporation Device 9d2b (rev 21)
00:1f.0 ISA bridge: Intel Corporation Intel(R) 100 Series Chipset Family LPC Controller/eSPI Controller - 9D4E (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Network controller: Intel Corporation Wireless 3165 (rev 79)
02:00.0 Non-Volatile memory controller: Toshiba America Info Systems Device 0113 (rev 01)
- ls /dev/video* 的输出
ls: cannot access '/dev/video*': No such file or directory
- v4l2-ctl --list-devices 的输出
Failed to open /dev/video0: No such file or directory
- lsmod 的输出
Module Size Used by
rfcomm 81920 16
pci_stub 16384 1
vboxpci 24576 0
vboxnetadp 28672 0
vboxnetflt 28672 0
vboxdrv 479232 3 vboxpci,vboxnetadp,vboxnetflt
ccm 20480 9
bnep 24576 2
snd_hda_codec_hdmi 61440 1
hid_multitouch 28672 0
8250_dw 16384 0
snd_hda_codec_realtek 131072 1
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
nls_iso8859_1 16384 1
snd_hda_intel 49152 6
snd_intel_dspcfg 28672 1 snd_hda_intel
mei_hdcp 24576 0
snd_hda_codec 135168 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
intel_rapl_msr 20480 0
snd_hda_core 90112 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 20480 1 snd_hda_codec
dell_laptop 20480 0
snd_pcm 102400 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
ledtrig_audio 16384 3 snd_hda_codec_generic,snd_hda_codec_realtek,dell_laptop
dell_smm_hwmon 20480 0
x86_pkg_temp_thermal 20480 0
intel_powerclamp 20480 0
coretemp 20480 0
kvm_intel 253952 0
kvm 659456 1 kvm_intel
crct10dif_pclmul 16384 1
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
snd_rawmidi 36864 1 snd_seq_midi
aesni_intel 372736 6
crypto_simd 16384 1 aesni_intel
btusb 57344 0
cryptd 24576 2 crypto_simd,ghash_clmulni_intel
glue_helper 16384 1 aesni_intel
btrtl 24576 1 btusb
btbcm 16384 1 btusb
rapl 20480 0
i915 1982464 31
intel_cstate 20480 0
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
dell_wmi 20480 0
btintel 24576 1 btusb
iwlmvm 385024 0
dell_smbios 28672 2 dell_wmi,dell_laptop
dcdbas 20480 1 dell_smbios
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
input_leds 16384 0
snd_timer 36864 2 snd_seq,snd_pcm
bluetooth 544768 43 btrtl,btintel,btbcm,bnep,btusb,rfcomm
mac80211 856064 1 iwlmvm
joydev 28672 0
ecdh_generic 16384 1 bluetooth
libarc4 16384 1 mac80211
snd 86016 23 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
serio_raw 20480 0
cdc_acm 40960 0
drm_kms_helper 188416 1 i915
ecc 32768 1 ecdh_generic
dell_wmi_descriptor 20480 2 dell_wmi,dell_smbios
wmi_bmof 16384 0
soundcore 16384 1 snd
drm 491520 18 drm_kms_helper,i915
iwlwifi 339968 1 iwlmvm
i2c_algo_bit 16384 1 i915
fb_sys_fops 16384 1 drm_kms_helper
intel_lpss_pci 20480 0
mei_me 40960 1
processor_thermal_device 24576 0
syscopyarea 16384 1 drm_kms_helper
ucsi_acpi 16384 0
intel_lpss 16384 1 intel_lpss_pci
sysfillrect 16384 1 drm_kms_helper
typec_ucsi 40960 1 ucsi_acpi
intel_rapl_common 24576 2 intel_rapl_msr,processor_thermal_device
intel_xhci_usb_role_switch 16384 0
cfg80211 712704 3 iwlmvm,iwlwifi,mac80211
idma64 20480 0
sysimgblt 16384 1 drm_kms_helper
roles 16384 1 intel_xhci_usb_role_switch
intel_soc_dts_iosf 20480 1 processor_thermal_device
virt_dma 20480 1 idma64
mei 102400 3 mei_hdcp,mei_me
intel_pch_thermal 16384 0
typec 45056 1 typec_ucsi
int3403_thermal 20480 0
int340x_thermal_zone 16384 2 int3403_thermal,processor_thermal_device
intel_hid 20480 0
int3400_thermal 20480 0
acpi_pad 184320 0
sparse_keymap 16384 2 intel_hid,dell_wmi
acpi_thermal_rel 16384 1 int3400_thermal
mac_hid 16384 0
sch_fq_codel 20480 1
parport_pc 40960 0
ppdev 24576 0
lp 20480 0
parport 53248 3 parport_pc,lp,ppdev
ip_tables 32768 0
x_tables 45056 1 ip_tables
autofs4 45056 2
hid_generic 16384 0
usbhid 53248 0
nvme 49152 2
psmouse 151552 0
sdhci_pci 53248 0
cqhci 28672 1 sdhci_pci
ahci 40960 0
nvme_core 106496 4 nvme
sdhci 65536 1 sdhci_pci
libahci 32768 1 ahci
i2c_hid 32768 0
wmi 32768 4 dell_wmi,wmi_bmof,dell_smbios,dell_wmi_descriptor
hid 126976 4 i2c_hid,usbhid,hid_multitouch,hid_generic
video 49152 3 dell_wmi,dell_laptop,i915
我检查了 BIOS 设置。摄像头在那里启用了。我尝试禁用然后再次启用。但没有用。
我当前的内核是 5.4.0-107-generic。由于网络摄像头以前可以正常工作，我尝试过以前的一些内核 5.4.0-105、104、100、90、80、70、60、52 和 5.3.0-62。但它们都不起作用。
当我输入
id检查我是否是视频组的成员时，我得到了以下信息：
uid=1000(bsarma) gid=1000(bsarma) groups=1000(bsarma),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),116(lpadmin),126(sambashare)
groups终端上显示以下内容：
bsarma adm cdrom sudo dip plugdev lpadmin sambashare
目前，我还不清楚我是否是该视频小组的成员。