And then suddenly out of the blue dmesg reports [10218.935204] usb 1-5: USB disconnect, device number 78 [10219.255070] usb 1-5: new high-speed USB device number 79 using xhci_hcd [10219.416920] usb 1-5: New USB device found, idVendor=0c45, idProduct=6365, bcdDevice= 0.00 [10219.416927] usb 1-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0 [10219.416930] usb 1-5: Product: USB 2.0 Camera [10219.416933] usb 1-5: Manufacturer: Sonix Technology Co., Ltd. [10219.419757] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (0c45:6365) [10219.420518] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. [10219.421168] uvcvideo: Failed to query (129) UVC probe control : -32 (exp. 26). [10219.421175] uvcvideo: Failed to initialize the device (-5).
Note the difference device! At least flooding demsg stops after this point. -- 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
