Here my similar problem: https://askubuntu.com/questions/1268740 /integrated-webcam-stopped-working-camera-is-working-on-windows
-- 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/1881413 Title: webcam is detected but not working Status in linux-signed package in Ubuntu: Confirmed Bug description: My builtin webcam stopped working after a kernel update issued after 22 April 2020 . Before this date i was able to take pictures on cheese and video call etc , and for a while i didn't use my webcam until yesterday i noticed that my webcam is getting detected as "usb 2.0 web camera" but its not working at all . Cheese shows a black screen when opened and Firefox asks for permission and then nothing happens . So i changed the kernel to version to 5.0 from 5.4.0.33 and webcam started working properly .So this issue is caused by a linux kernel update . output of sudo lshw : *-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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1881413/+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
