It appears in 20.04, both desktop-icons and ubuntu-dock are to blame. You can only solve the problem by removing both simultaneously. I guess they're both trying to redraw during the new unlock animation?
** Changed in: gnome-shell-extension-desktop-icons (Ubuntu) Importance: Undecided => Medium ** Changed in: gnome-shell-extension-ubuntu-dock (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/1832812 Title: Locking and unlocking the screen is slow and stuttery Status in gnome-shell package in Ubuntu: Fix Released Status in gnome-shell-extension-desktop-icons package in Ubuntu: Confirmed Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: Confirmed Bug description: Details in my video: https://photos.app.goo.gl/x45Razdc2d3TPqCF8 ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gdm3 3.32.0-1ubuntu1 ProcVersionSignature: Ubuntu 5.0.0-16.17-generic 5.0.8 Uname: Linux 5.0.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Jun 14 10:10:38 2019 InstallationDate: Installed on 2019-06-13 (0 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190606) SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.gdm3.custom.conf: 2019-06-13T15:35:30.513049 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1832812/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
