| Summary: | On secondary monitor, wallpaper briefly flashes after being changed | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Жора Змейкин <katze_942> |
| Component: | Image & Slideshow wallpaper plugins | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | CC: | meven29, meven, nate, notmart, qydwhotmail |
| Priority: | NOR | Keywords: | qt6 |
| Version: | master | ||
| Target Milestone: | 1.0 | ||
| Platform: | Neon | ||
| OS: | Linux | ||
| Latest Commit: | https://invent.kde.org/plasma/plasma-workspace/-/commit/ea07f95b3f47918fe9d176e5300fd74354df5a9d | Version Fixed In: | 6.0 |
| Sentry Crash Report: | |||
| Attachments: | Demonstration | ||
Can reproduce the brief flash after the wallpaper changes. Reproduces for me both from the Wallpaper KCM as well as the UI in the desktop containment settings window. Looking a the video image per image, the "little twitch" is at the end of The Opacity transition, the last step of opacity is quite abrupt and if the previous wallpaper was brighter than the new one, this becomes noticeable.
I tried using a ProppertyAnimation on opacity with an easing curve, it seemed to improve things somewhat, but couldn't be satisfied.
In ImageStackView
Code has comments by Fushan:
```
// The value is to keep compatible with the old feeling defined by "TransitionAnimationDuration" (default: 1000)
// 1 is HACK for https://bugreports.qt.io/browse/QTBUG-106797 to avoid flickering
```
Added in commit ea06a3259a8784b380d8c1aabb6946154129c150
Can reproduce on my laptop, but cannot reproduce in a VM. I guess it's related to the video driver. A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/3686 Git commit ea07f95b3f47918fe9d176e5300fd74354df5a9d by Fushan Wen. Committed on 15/12/2023 at 14:50. Pushed by fusionfuture into branch 'master'. wallpapers/image: make the last wallpaper stay longer during transition The exit transition starts first and can be completed earlier than the enter transition, so add extra 500ms to the exit transition to avoid flicker when the last wallpaper has been destroyed but the enter transition is not completed yet. FIXED-IN: 6.0 M +2 -1 wallpapers/image/imagepackage/contents/ui/ImageStackView.qml https://invent.kde.org/plasma/plasma-workspace/-/commit/ea07f95b3f47918fe9d176e5300fd74354df5a9d Git commit 4f730d6c63b440f461296da5d2f448d1ee77998f by Fushan Wen. Committed on 14/02/2024 at 01:34. Pushed by fusionfuture into branch 'master'. wallpapers/image: make the last wallpaper stay longer during transition The exit transition starts first and can be completed earlier than the enter transition, so add extra 500ms to the exit transition to avoid flicker when the last wallpaper has been destroyed but the enter transition is not completed yet. M +2 -1 wallpapers/potd/package/contents/ui/main.qml https://invent.kde.org/plasma/kdeplasma-addons/-/commit/4f730d6c63b440f461296da5d2f448d1ee77998f Git commit 69245fa93440e5b4382401caca0a9b263f12838f by Fushan Wen. Committed on 15/02/2024 at 01:55. Pushed by fusionfuture into branch 'Plasma/6.0'. wallpapers/image: make the last wallpaper stay longer during transition The exit transition starts first and can be completed earlier than the enter transition, so add extra 500ms to the exit transition to avoid flicker when the last wallpaper has been destroyed but the enter transition is not completed yet. (cherry picked from commit 4f730d6c63b440f461296da5d2f448d1ee77998f) M +2 -1 wallpapers/potd/package/contents/ui/main.qml https://invent.kde.org/plasma/kdeplasma-addons/-/commit/69245fa93440e5b4382401caca0a9b263f12838f |
Created attachment 163863 [details] Demonstration On the main monitor the wallpaper changes pretty smoothly, but on the second monitor I notice a little twitch when the wallpaper changes. This is especially visible in the video. STEPS TO REPRODUCE 1. Open the wallpaper settings. 2. Connect a second monitor. 3. Change the wallpaper for the second monitor. OBSERVED RESULT Twitching when changing the wallpaper EXPECTED RESULT Smooth wallpaper change, just like on the main monitor SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon (Unstable), Wayland KDE Plasma Version: 5.90.0 KDE Frameworks Version: 5.246.0 Qt Version: 6.6.0