dmesg output with tracing for uvcvideo: [ 1839.059133] usb 1-5: new high-speed USB device number 5 using xhci_hcd [ 1839.225622] usb 1-5: New USB device found, idVendor=0c45, idProduct=6723, bcdDevice=80.08 [ 1839.225629] usb 1-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0 [ 1839.225633] usb 1-5: Product: Integrated_Webcam_HD [ 1839.225636] usb 1-5: Manufacturer: CN09357GLOG008CPA4WEA01 [ 1839.228058] uvcvideo: Probing generic UVC device 5 [ 1839.228833] uvcvideo: Found format MJPEG. [ 1839.228838] uvcvideo: - 1280x720 (30.0 fps) [ 1839.228840] uvcvideo: - 960x540 (30.0 fps) [ 1839.228842] uvcvideo: - 848x480 (30.0 fps) [ 1839.228844] uvcvideo: - 640x480 (30.0 fps) [ 1839.228846] uvcvideo: - 640x360 (30.0 fps) [ 1839.228848] uvcvideo: Found format YUV 4:2:2 (YUYV). [ 1839.228850] uvcvideo: - 640x480 (30.0 fps) [ 1839.228852] uvcvideo: - 640x360 (30.0 fps) [ 1839.228853] uvcvideo: - 424x240 (30.0 fps) [ 1839.228855] uvcvideo: - 320x240 (30.0 fps) [ 1839.228857] uvcvideo: - 320x180 (30.0 fps) [ 1839.228859] uvcvideo: - 160x120 (30.0 fps) [ 1839.228870] uvcvideo: Found a Status endpoint (addr 83). [ 1839.228873] uvcvideo: Found UVC 1.00 device Integrated_Webcam_HD (0c45:6723) [ 1839.228883] uvcvideo: Added control 00000000-0000-0000-0000-000000000001/2 to device 5 entity 1 [ 1839.229216] uvcvideo: Adding mapping 'Exposure, Auto' to control 00000000-0000-0000-0000-000000000001/2. [ 1839.229222] uvcvideo: Added control 00000000-0000-0000-0000-000000000001/3 to device 5 entity 1 [ 1839.229546] uvcvideo: Adding mapping 'Exposure, Auto Priority' to control 00000000-0000-0000-0000-000000000001/3. [ 1839.229552] uvcvideo: Added control 00000000-0000-0000-0000-000000000001/4 to device 5 entity 1 [ 1839.229866] uvcvideo: Adding mapping 'Exposure (Absolute)' to control 00000000-0000-0000-0000-000000000001/4. [ 1839.229874] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/2 to device 5 entity 2 [ 1839.230214] uvcvideo: Adding mapping 'Brightness' to control 00000000-0000-0000-0000-000000000101/2. [ 1839.230219] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/3 to device 5 entity 2 [ 1839.230490] uvcvideo: Adding mapping 'Contrast' to control 00000000-0000-0000-0000-000000000101/3. [ 1839.230495] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/6 to device 5 entity 2 [ 1839.230756] uvcvideo: Adding mapping 'Hue' to control 00000000-0000-0000-0000-000000000101/6. [ 1839.230760] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/7 to device 5 entity 2 [ 1839.231024] uvcvideo: Adding mapping 'Saturation' to control 00000000-0000-0000-0000-000000000101/7. [ 1839.231032] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/8 to device 5 entity 2 [ 1839.231341] uvcvideo: Adding mapping 'Sharpness' to control 00000000-0000-0000-0000-000000000101/8. [ 1839.231343] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/9 to device 5 entity 2 [ 1839.231621] uvcvideo: Adding mapping 'Gamma' to control 00000000-0000-0000-0000-000000000101/9. [ 1839.231624] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/10 to device 5 entity 2 [ 1839.231906] uvcvideo: Adding mapping 'White Balance Temperature' to control 00000000-0000-0000-0000-000000000101/10. [ 1839.231908] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/1 to device 5 entity 2 [ 1839.232168] uvcvideo: Adding mapping 'Backlight Compensation' to control 00000000-0000-0000-0000-000000000101/1. [ 1839.232171] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/4 to device 5 entity 2 [ 1839.232430] uvcvideo: Adding mapping 'Gain' to control 00000000-0000-0000-0000-000000000101/4. [ 1839.232432] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/5 to device 5 entity 2 [ 1839.232694] uvcvideo: Adding mapping 'Power Line Frequency' to control 00000000-0000-0000-0000-000000000101/5. [ 1839.232696] uvcvideo: Added control 00000000-0000-0000-0000-000000000101/11 to device 5 entity 2 [ 1839.232975] uvcvideo: Adding mapping 'White Balance Temperature, Auto' to control 00000000-0000-0000-0000-000000000101/11. [ 1839.232976] uvcvideo: Scanning UVC chain: OT 5 <- XU 4 <- XU 3 <- PU 2 <- IT 1 [ 1839.232981] uvcvideo: Found a valid video chain (1 -> 5). [ 1839.235092] input: Integrated_Webcam_HD: Integrate as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/input/input307 [ 1839.235167] uvcvideo: UVC device initialized. [ 1839.254691] uvcvideo: uvc_v4l2_open [ 1839.254845] uvcvideo: uvc_v4l2_release [ 1839.261854] uvcvideo: uvc_v4l2_open [ 1839.261868] uvcvideo: uvc_v4l2_release [ 1839.261919] uvcvideo: uvc_v4l2_open [ 1839.261996] uvcvideo: uvc_v4l2_release [ 1839.262019] uvcvideo: uvc_v4l2_open [ 1839.262160] uvcvideo: uvc_v4l2_open [ 1839.277784] uvcvideo: uvc_v4l2_release [ 1839.277816] uvcvideo: uvc_v4l2_release [ 1839.541751] uvcvideo: uvc_v4l2_open [ 1839.541765] uvcvideo: uvc_v4l2_release [ 1839.542400] uvcvideo: uvc_v4l2_open [ 1839.542405] uvcvideo: uvc_v4l2_release [ 1839.542743] uvcvideo: uvc_v4l2_open [ 1839.542751] uvcvideo: uvc_v4l2_release [ 1840.139545] usbcore: deregistering interface driver uvcvideo
-- 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
