Bug 411757

Summary:	Window decoration says "Not responding..." on Wayland while the spinner rotates in "Updates" page
Product:	[Plasma] kwin	Reporter:	Patrick Silva <bugseforuns>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	aleixpol, kde, nate
Priority:	NOR
Version:	5.16.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Patrick Silva 2019-09-09 14:26:21 UTC

STEPS TO REPRODUCE
1. start Wayland session
2. when updates are available, open Discover by clicking on the updates notification or on the update notifier icon in systray
3. 

OBSERVED RESULT
while the spinner rotates in the "Updates" page, the window decoration says "Not responding..." and Discover window is desatured.

EXPECTED RESULT
window decoration never says "Not responding..." and Discover window is not desatured
while the spinner rotates.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.61.0
Qt Version: 5.13.1

Comment 1 Patrick Silva 2019-09-10 17:54:53 UTC

To reproduce this issue, you need to switch between Discover and another window running natively on Wayland while the spinner rotates.

STEPS TO REPRODUCE
1. start Wayland session
2. when updates are available, open an app that runs natively on Wayland (let's say Dolphin) and open Discover by clicking on the updates notification or on the update notifier icon in systray and
3. while the spinner rotates in "Updates" page, switch between Discover and Dolphin a few times by pressing alt+tab

OBSERVED RESULT
At some point, the window decoration says "Not responding..." and Discover window becomes desatured despite the spinner is still rotating.

Comment 2 Kai Uwe Broulik 2019-09-16 06:44:42 UTC

The spinner is animated on the renderer thread and as such can continue to spin even if the main thread is frozen.

Comment 3 Aleix Pol 2019-10-09 15:42:58 UTC

I've seen kwin setting applications as not responding while they actually are, this is something that needs to be dealt with there.

Comment 4 Patrick Silva 2019-10-09 23:34:46 UTC

duplicate of bug 399021?

Comment 5 Aleix Pol 2019-10-10 00:07:16 UTC

Thanks

*** This bug has been marked as a duplicate of bug 399021 ***