As a separate test I have reproduced this on my X220 which has now got an uptime of 3 days with zero applications running besides gnome terminal. When originally booted it was fast as expected. But now, after a number of lock/unlock cycles and 3 days uptime, it's slow to move icons around the launcher.
-- 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/1846477 Title: Dragging icons in launcher is slow until shell restarted Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: New Bug description: Today I noticed that dragging icons up and down the launcher is painfully slow, to the point where it feels like the desktop has locked up. The gnome-shell process is pegged at 100% while this is happening. Restarting gnome shell (alt+f2, r) makes it faster to refresh the move of the icon but still super slow at drawing the line where you drop it. However, it's super fast on clean boot of a separate machine - x220 (7 years old i7) and another nvidia 960 gpu equipped i7 laptop. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-shell 3.34.0-1ubuntu1 ProcVersionSignature: Ubuntu 5.3.0-12.13-generic 5.3.0 Uname: Linux 5.3.0-12-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Oct 3 12:24:48 2019 DisplayManager: gdm3 InstallationDate: Installed on 2018-02-04 (605 days ago) InstallationMedia: neon userlts "Xenial" - Build amd64 LIVE Binary 20180202-11:07 RelatedPackageVersions: mutter-common 3.34.0-3ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to eoan on 2019-09-19 (13 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1846477/+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