Bug 408912 - Desktop starts to flicker when a modal window appears
Summary: Desktop starts to flicker when a modal window appears
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: effects-window-management (show other bugs)
Version: 5.12.7
Platform: Kubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-06-19 15:39 UTC by Dmitry Kazakov
Modified: 2019-07-28 08:08 UTC (History)
0 users

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Description Dmitry Kazakov 2019-06-19 15:39:27 UTC 
SUMMARY


STEPS TO REPRODUCE
1. Open and application with modal dialogs (Krita or Simple Screen Recorder)
2. Request a modal dialog (e.g. Ctrl+W in Krita)
3. See flickering around the window

Video of the result:
https://yadi.sk/i/uuU40g4xEbfUCQ


Linux/KDE Plasma: Kubuntu 18.04
(available in About System)
KDE Plasma Version: 5.12.7
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5
Comment 1 Vlad Zahorodnii 2019-06-19 16:37:06 UTC 
Can you upload the video to the Bugzilla (if its size is small) or to YouTube?
Comment 2 Dmitry Kazakov 2019-06-20 14:19:43 UTC 
Hi, Vlad!

The video doesn't fit the bugzilla's limit, so here is a link to youtube:
https://youtu.be/gRnc6x9q7PY
Comment 3 Vlad Zahorodnii 2019-06-21 12:19:30 UTC 
Does the screen flicker when the dialog parent effect is disabled?
Comment 4 Vlad Zahorodnii 2019-06-24 11:59:59 UTC 
Might be related to bug 384660.
Comment 5 Dmitry Kazakov 2019-07-28 08:08:12 UTC 
Well, I tested the the bug again, and it doesn't happen anymore :(

I also tried to activate Dialog Parent effect and some other effects, but it is not reproducible anymore. Even when using external display. Perhaps it was some driver fault, I don't know. 

I'll close the bug as WORKSFORME. Sorry for bothering :(