$ dmesg --follow outputs the following couple of lines over and over again:
[ 133.319431] usb 1-5: USB disconnect, device number 107 [ 133.630667] usb 1-5: new high-speed USB device number 108 using xhci_hcd [ 133.802683] usb 1-5: New USB device found, idVendor=0c45, idProduct=6723, bcdDevice=80.08 [ 133.802690] usb 1-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0 [ 133.802693] usb 1-5: Product: Integrated_Webcam_HD [ 133.802696] usb 1-5: Manufacturer: CN09357GLOG008CPA4WEA01 [ 133.806737] uvcvideo: Found UVC 1.00 device Integrated_Webcam_HD (0c45:6723) [ 133.818203] input: Integrated_Webcam_HD: Integrate as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/input/input126 Each iteration incrementing the number on the last line by one. E.g. input126, input127, input128. At the same rate the device files keep disappearing re-appearing: $ ll /dev/video* crw-rw----+ 1 root video 81, 0 Feb 11 15:31 /dev/video0 crw-rw----+ 1 root video 81, 1 Feb 11 15:31 /dev/video1 $ ll /dev/video* ls: cannot access '/dev/video*': No such file or directory The whole thing makes my laptop lag at the rhythm of the messages appearing with dmesg. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed in Ubuntu. https://bugs.launchpad.net/bugs/1881757 Title: webcam is detected but not working with kernel 5.4.0.33 Status in linux-signed package in Ubuntu: Fix Released Bug description: webcam is detected not working under kernel 5.4.0.33 and 5.4.0.31 . The webcam is functional with kernels 5.0 and 5.6.15 . -usb:1 description: Video product: USB 2.0 Web Camera vendor: Alcor Micro, Corp. physical id: 2 bus info: usb@1:1.2 version: 0.08 capabilities: usb-2.00 configuration: driver=uvcvideo maxpower=200mA speed=480Mbit/s susb; lsb_release -a; uname -a Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 1d0b:0021 HAN HUA CABLE & WIRE TECHNOLOGY (J.X.) CO., LTD. Bus 001 Device 003: ID 058f:5608 Alcor Micro Corp. Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04 LTS Release: 20.04 Codename: focal Linux afsal-Excelance 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:53:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux more info : https://answers.launchpad.net/ubuntu/+question/691070 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1881757/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
