Bug 1147059

Summary:	Spontaneous freezes in X11 applications
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	Vladimir Sadovnikov <sadko4u>
Component:	X11 Applications	Assignee:	E-mail List <kde-maintainers>
Status:	NEW ---	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None	CC:	alynx.zhou, sadko4u
Version:	Current
Target Milestone:	---
Hardware:	x86-64
OS:	Other
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Vladimir Sadovnikov 2019-08-23 11:02:50 UTC

After last update, noticed that some X11 applications do spontaneous UI freezes.
The freeze behaves in such manner: I'm doing some mouse actions or entering some data from keyboard, and occasionally the application's UI stops to update.

If I keep it hanging, it will unhang after several time.
If I change the focus to another application and return back, the application unhangs immediately and redraws the UI in proper manner.

This case is specially noticeable with Firefox browser and Telegram messenger.
There were no noticeable freezes for such applications like Eclipse and Idea.

Comment 1 Alynx Zhou 2019-10-12 03:11:53 UTC

Does this problem still exist? What kind of desktop environment you use? Maybe a DE-related problem.

Comment 2 Vladimir Sadovnikov 2019-10-12 06:48:07 UTC

The environment is KDE, intel graphics card and KDE desktop.
When I change rendering engine in screen effects from openGL 2.0 to openGL 3.1 or back, the problem disappears.
After a reboot, the problem appears again until I manually change a rendering engine.