Created attachment 131889 [details] Window thumbnail not working on Wayland SUMMARY I installed Plasma 5.19.90 on Archlinux, and one of the new features of this release is the support for window thumbnails on Wayland. unfortunately, it does not work on my computer. I enabled thumbnails in Latte-dock and the thumbnail does not show the window content (see attached file). STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.19.90 KDE Frameworks Version: 5.74 Qt Version: 5.15.1 ADDITIONAL INFORMATION
On my Arch running Plasma 5.20 beta, tooltips do not show the preview of the windows and make kwin_wayland to crash.
>the preview of the windows and make kwin_wayland to crash. is there any chance that you could attach the backtrace of the crash to this bug report?
(In reply to Vlad Zahorodnii from comment #2) > >the preview of the windows and make kwin_wayland to crash. > is there any chance that you could attach the backtrace of the crash to this > bug report? reported as bug 425869
I just discovered that window thumbnail does not work with Latte-dock, which I am using. I tried with a regular Plasma panel and thumbnails work ! So the problem seems to be on Latte's side.
Reassigning for investigation.
which Latte version?
2. Plasma panels with plasma taskmanagers do they provide task previews under wayland? are you sure?
I can reproduce the situation Patrick was talking about. Hovering over the icon in the task bar (for the window thumbnail) immediately makes the entire Plasma session crash under a Fedora 33 (beta) install, Plasma 5.19.90 Wayland session.
So, since the thumbnails work fine on a regular Plasma panel, should I close this bug report ?
(In reply to Patrick Silva from comment #1) > On my Arch running Plasma 5.20 beta, tooltips do not show the preview of the > windows and make kwin_wayland to crash. I also have the problem of no Window thumbnails for the Plasma icons only task manager on Wayland. I created https://bugs.kde.org/show_bug.cgi?id=427826 for it.
Git commit 839980192d1608134c40735b8d75fd2ccd832e0f by Michail Vourlakos. Committed on 25/10/2020 at 09:43. Pushed by mvourlakos into branch 'master'. wayland:enable previews for Plasma 5.20 M +3 -2 plasmoid/package/contents/ui/main.qml A +33 -0 plasmoid/package/contents/ui/previews/PipeWireThumbnail.qml [License: LGPL (v2+)] A +33 -0 plasmoid/package/contents/ui/previews/PlasmaCoreThumbnail.qml [License: GPL (v2+)] M +5 -15 plasmoid/package/contents/ui/previews/ToolTipInstance.qml https://invent.kde.org/plasma/latte-dock/commit/839980192d1608134c40735b8d75fd2ccd832e0f