Bug 347946 - Task Manager tooltip reveal/move animations flickering and showing redraw artifacts when happening alongside window highlight effect
Summary: Task Manager tooltip reveal/move animations flickering and showing redraw art...
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: effects-various (show other bugs)
Version: git master
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-05-19 13:44 UTC by Eike Hein
Modified: 2018-10-21 20:26 UTC (History)
1 user (show)

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Description Eike Hein 2015-05-19 13:44:39 UTC 
See bug 341934  for context.

Reproducible: Always
Comment 1 Thomas Lübking 2015-05-20 18:58:49 UTC 
I tried this and the only thing I can see is that the tooltip briefly (one frame?) disappears when hovering the next entry, but that's it.

Do we have a better explanation, screenshot or video of what happens?
Comment 2 Eike Hein 2015-05-20 19:02:58 UTC 
Make sure you have both "Show Tooltips" and "Highlight Windows" enabled in the Task Manager, then hover various tasks. When the tooltip show/hide/move animations happen at the same time as window highlighting tweening, there's flickering and ghosting.
Comment 3 Thomas Lübking 2015-05-20 19:06:10 UTC 
Yes, I had that and no, that simply didn't happen.
Sounds a bit like related to the blur cache, maybe animation time?

kcmshell5 kwineffects, filter for blur, configure it, uncheck the saving of interim results.
-> Still an issue on your side?
Comment 4 Oswald Buddenhagen 2016-07-24 18:51:18 UTC 
i have no problem with the tooltip, but the described behavior applies to the popup menu for choosing among grouped windows.

and the guess about the blur effect seems to be spot-on.
Comment 5 Vlad Zahorodnii 2018-10-21 20:26:27 UTC 
Works fine for me.

If you're still able to reproduce the bug, please reopen this bug report.