Arch Linux

tovarishStepanov

Member

Registered: 2022-10-24

Posts: 2

Webcam stange behaviour

Good day,

I can't make my Logitech C270 webcam properly work. In random time it switches from /dev/videoX to /dev/videoY. That causes zoom and other apps freeze and crash. Here are some outputs:

root@sstepanov ~ # v4l2-ctl --list-devices
C270 HD WEBCAM (usb-0000:00:14.0-6):
	/dev/video2
	/dev/video4
	/dev/media0

Cannot open device /dev/video0, exiting

sstepanov@sstepanov ~ % sudo dmesg | tail
[73761.412682] input: C270 HD WEBCAM as /devices/pci0000:00/0000:00:14.0/usb3/3-6/3-6:1.0/input/input56
[73761.478606] usb 3-6: set resolution quirk: cval->res = 384

sstepanov@sstepanov ~ % hwdetect --show-modules
find: ‘/sys/kernel/tracing’: Permission denied
find: ‘/sys/kernel/debug’: Permission denied
find: ‘/sys/fs/pstore’: Permission denied
find: ‘/sys/fs/bpf’: Permission denied
AGP      : intel-gtt 
ACPI     : video 
BLOCK    : ata_piix sr_mod ata_piix uvcvideo xhci-pci xhci-pci-renesas snd-usb-audio snd-usbmidi-lib 
BLUETOOTH: btbcm btintel btmtk btrtl btusb bluetooth 
CDROM    : cdrom 
CPUFREQ  : acpi-cpufreq pcc-cpufreq 
CRYPTO   : aesni-intel crc32c-intel crc32-pclmul crct10dif-pclmul ghash-clmulni-intel polyval-clmulni cryptd crypto_simd ecdh_generic gf128mul polyval-generic 
DRM      : drm_display_helper drm_buddy i915 ttm 
EVENTS   : intel-cstate intel-uncore rapl 
HWMON    : coretemp 
I2C      : i2c-i801 i2c-smbus 
INPUT    : joydev mousedev hid-logitech-dj hid-logitech-hidpp usbhid mac_hid 
KVM      : kvm-intel kvm 
MEDIA    : cec videobuf2-common videobuf2-memops videobuf2-v4l2 videobuf2-vmalloc mc uvcvideo videodev 
MEI      : mei_hdcp mei mei_pxp 
MFD      : intel_pmc_bxt lpc_ich 
MTD      : mtd spi-nor 
NET      : e1000e fjes bluetooth rfkill 
POWERCAP : intel_rapl_common intel_rapl_msr 
SOUND    : pcspkr snd-hwdep snd snd-pcm snd-rawmidi snd-seq-device snd-timer snd-hda-core snd-intel-dspcfg snd-intel-sdw-acpi snd-hda-codec-generic snd-hda-codec-hdmi snd-hda-codec snd-hda-codec-realtek snd-hda-intel soundcore snd-usb-audio snd-usbmidi-lib 
THERMAL  : intel_powerclamp x86_pkg_temp_thermal 
VIRT     : irqbypass 
WATCHDOG : iTCO_vendor_support iTCO_wdt mei_wdt 
OTHER    : ledtrig-audio at24 spi-intel spi-intel-platform crc16 

thx in advance

tovarishStepanov

Member

Registered: 2022-10-24

Posts: 2

Re: Webcam stange behaviour

fixed

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,261

Re: Webcam stange behaviour

How? Note https://wiki.archlinux.org/title/Genera … way_street

In any case please mark as [SOLVED] by editing the title in the subject. https://wiki.archlinux.org/title/Genera … ow_to_post