Using 'Ubuntu on Xorg' instead of 'Ubuntu' also helps. Because the former having more layers and less internal blocking actually dabbles in triple buffering sometimes by accident. Although I'm not sure if that's the reason it's smoother or just Xorg adds extra GPU load.
Since the default 'Ubuntu' session in 20.04 was Xorg and in 21.04 onward it is Wayland, that would explain a perceived performance drop that some users may notice. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1937127 Title: Gnome-shell animations smoother when external monitor is connected Status in gnome-shell package in Ubuntu: In Progress Bug description: When no external monitor is connected Gnome Shell activities animation is sluggish. Once an external monitor is connected the animation becomes noticeably smoother. It looks like the OS is not properly responding to the extra processing demands by raising the CPU/GPU performance, and having an external monitor connected somehow triggers a higher performance level. This is on a System76 Darter Pro machine with Intel® Core™ i7-8565U and Intel UHD 620 running Ubuntu 21.04 in Wayland session. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: gnome-shell 3.38.4-1ubuntu3~21.04.1 ProcVersionSignature: Ubuntu 5.11.0-7620.21~1624379747~21.04~3abeff8~dev-generic 5.11.21 Uname: Linux 5.11.0-7620-generic x86_64 ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Jul 21 12:51:55 2021 DisplayManager: gdm3 InstallationDate: Installed on 2021-07-14 (7 days ago) InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420) RelatedPackageVersions: mutter-common 3.38.4-1ubuntu2 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1937127/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
