Initial report: BUG 453943 SUMMARY After the recent QML rewrite of the desktopgrid effect, the opening and closing animation has started jittering / has become unsmooth. This is especially noticable when no windows are open on any desktops, or when all windows are minimized. The animation length is also not configurable anymore, which might be a problem for some people who'd like to have a more "snappy" feeling when toggling the grid compared to the system-wide animation duration. See https://youtu.be/A0ydBC6tvUQ STEPS TO REPRODUCE 1. set up a 3x3 grid 2. toggle desktopgrid via hotkey SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.94.0 Qt Version: 5.15.4 ADDITIONAL INFORMATION - KWin built from 09ba8729fc12 (current master) using the modified PKGBUILD of the Arch repos - kdecoration built from 4123ec8c1993 (current master) using the modified PKGBUILD of the Arch repos - plasma-wayland-protocols built from 26fb07b9f8d3 (current master) using the modified PKGBUILD of the Arch repos - the remaining dependencies were all from the official Arch repos
Cannot reproduce on Wayland. It's nice and smooth for me. Does it help if you go to System Settings > Display and Monitor > Compositor and change the "Latency" combobox to "Prefer smoother animations" or "Force smoother animations"? Also, is it better on Wayland? > The animation length is also not configurable anymore This is intentional: the effect now follows the systemwide animation duration setting, rather than having its own.
This happens on both X11 and Wayland, and changing the compositor's latency/animation policy on both doesn't have any effects. On Wayland, the animation is even slightly worse, because it's displaying the hidden panel for one frame when the animation starts. I haven't observed this on X11. Smoothness-wise, it's the same. I'm using two 1920x1080@60 displays, with the right one as primary screen. AMDGPU (RX 5700XT), mesa 22.0.3, in case that's relevant.
Thanks. Cannot reproduce.
confirm, x11, nvidia
To make this bug appear you need to invoke desktop grid. move the window from one destktop to the other, close desktop grid and invoke it again.
I'm also having this problem on arch and an nvidia card. Just started happening with the update to 5.25 today. I'm using a desktop and not a laptop if that matters here.
From what I can tell, it's less jittering and more bouncing at the start that makes the animation look rough.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/2536
*** Bug 455422 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 451590 ***