Bug 484472

Summary: Overview effect crashes kwin
Product: [Plasma] kwin Reporter: Guido <guido.iodice>
Component: eglAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: conordockry, kde
Priority: NOR    
Version First Reported In: 6.0.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Guido 2024-03-25 20:29:36 UTC 
SUMMARY
In the X11 session, activating the overview effect crashes kwin. The same happens with the present windows effect.


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux 
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.8.1-2-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: Dell Inc.
Product Name: Inspiron 5502

ADDITIONAL INFORMATION
Comment 1 Guido 2024-03-25 21:04:36 UTC 
update: It seems that the problem is the use of egl. 
Using glx for both kwin and qt the problem does not occur.

KWIN_OPENGL_INTERFACE=xcb QT_XCB_GL_INTEGRATION=glx  kwin_x11 --replace

works fine.
Comment 2 David Edmundson 2024-03-26 22:22:03 UTC 
How did you end up not using GLX in Qt?
Comment 3 Guido 2024-03-26 22:23:42 UTC 
(In reply to David Edmundson from comment #2)
> How did you end up not using GLX in Qt?

GLX is practically deprecated, EGL is the new standard. On Plasma 5 I had been using EGL for years without any problem.
Comment 4 David Edmundson 2024-03-26 22:27:11 UTC 
Ok, but how did you set it?
Comment 5 Guido 2024-03-26 22:30:24 UTC 
(In reply to David Edmundson from comment #4)
> Ok, but how did you set it?

export KWIN_OPENGL_INTERFACE=egl
export QT_XCB_GL_INTEGRATION=xcb_egl

In my experience, the performance is better (on Plasma 5).
Comment 6 Guido 2024-03-28 15:21:02 UTC 
@David(In reply to David Edmundson from comment #4)

Does the bug occur for you as well? Any idea why?
Comment 7 Guido 2024-03-30 18:24:46 UTC 
The bug affects also 6.0.3
Comment 8 Guido 2024-03-30 18:25:22 UTC 
The bug affects also kwin 6.0.3
Comment 9 Conor Dockry 2024-04-08 07:09:28 UTC 

*** This bug has been marked as a duplicate of bug 483912 ***