Bug 459539

Summary:	kwin freeze after window opens while dragging another window
Product:	[Plasma] kwin	Reporter:	Ralf Jung <post>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.25.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Ralf Jung 2022-09-22 16:38:57 UTC

SUMMARY

I was dragging the main Zoom window to another screen when zoom also opened a notification window telling me about who is the host or something like that, when kwin froze entirely -- I could still move my cursor but no interaction with the system was possible. I had to 'killall -9' kwin to be able to use my system again.

SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.4
Kernel Version: 5.19.0-1-amd64 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Xeon® CPU E3-1505M v5 @ 2.80GHz
Memory: 31,2 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics P530
Manufacturer: LENOVO
Product Name: 20ENCTO1WW
System Version: ThinkPad P50

ADDITIONAL INFORMATION

Comment 1 Vlad Zahorodnii 2026-01-22 11:53:39 UTC

Interactive move code used to have a code path where kwin could get stuck in an infinite loop, that code had been rewritten a while ago so there is no a while (true) loop.