I caught the console message on camera: uvcvideo: Failed to query (GET_INFO) UVC control 15 on unit 1: -32 (exp. 1).
Googling around it seems this is a pretty spammy message, perhaps it is unrelated to what is actually happening. I can reproduce this crash putting my system under stress, opening a lot of programs and making it swap. At some point it starts stuttering, then crashes. It happens before the swap space is depleted, about 30% of a 2GB swap partition. It's a ThinkPad X1 laptop with SSD. ** Attachment added: "Screenshot_20200710-153131.png" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1886835/+attachment/5391439/+files/Screenshot_20200710-153131.png -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1886835 Title: crashes to login screen, uvc related stuff blinks on console Status in lightdm package in Ubuntu: New Bug description: I started getting random crashes to login screen, about twice a day. When crashes I briefly see some logging output to screen mentioning "UVC Control" or uvcview. I'm not using the webcam when the system crashes. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: lightdm 1.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 5.3.0-61.55~18.04.1-generic 5.3.18 Uname: Linux 5.3.0-61-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 CurrentDesktop: Unity:Unity7:ubuntu Date: Wed Jul 8 11:55:34 2020 InstallationDate: Installed on 2020-02-12 (146 days ago) InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1) SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1886835/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp