https://bugs.kde.org/show_bug.cgi?id=375268
Bug ID: 375268
Summary: Kwin freezes when using hot corner and GTK tooltip is
displayed
Product: kwin
Version: 5.8.5
Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: fl...@mailoo.org
Target Milestone: ---
When hovering over a GTK-window area producing a tooltip and quickly reach to
hot corner to display the "Grid effect", Kwin freezes. One has a to go to
Console (e.g. Ctrl+Atl+F1) to kill kwin_x11 to get control of the GUI again.
Step to reproduce:
- Have Kwin set to display Grid Effect on a hot corner (not tested with Windows
Presentation, might or might not be reproducible with it)
- Open a GTK software (tested with LibreOffice and Gimp)
- Get a tooltip-displaying area close to the hot corner
- Reach quickly the hot corner to activate the effect while the tooltip is
still displayed (my activation delays are set to 50ms, the default of 150ms
might take to long to trigger the effect?)
Effects: The GUI freezes (apart from mouse) leaving you with no choice but to
go into CLI, kill kwin_x11 (with "hard kill", e.g. -9 signal) and go back to
GUI to restart kwin_x11.
Reproducible: Not always unfortunately. I have been able to reproduce the past
15 minutes, but now I don't seem able to re-trigger the bug anymore. The bug
has been triggered quite a few times over the past weeks though.
Systems affected: Both OpenSuse Leap 42.2 and Tumbleweed (two different
computers both using Intel HD Graphics), thus both very up-to-date regarding
Plasma.
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