Bug 406203 - Task Manager displays wrong windows on dual-monitor setup after random time.
Summary: Task Manager displays wrong windows on dual-monitor setup after random time.
Status: RESOLVED WORKSFORME
Alias: None
Product: plasmashell
Classification: Plasma
Component: Task Manager and Icons-Only Task Manager (show other bugs)
Version: 5.15.4
Platform: Arch Linux Linux
: NOR normal
Target Milestone: 1.0
Assignee: Eike Hein
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-04-03 23:59 UTC by Aaron Bottegal
Modified: 2019-07-10 19:17 UTC (History)
1 user (show)

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Description Aaron Bottegal 2019-04-03 23:59:22 UTC 
SUMMARY


STEPS TO REPRODUCE
1. Use dual monitors, configed to show only current screen and current desktop windows.

2. Eventually, task manager will match the other monitor. Is random for how long it takes, usually.

OBSERVED RESULT
Task manager on desktop will show windows for opposite monitor.

EXPECTED RESULT
Task manager only shows windows in that monitor and virtual desktop.

Sometimes, I always notice it when the desktop crashes. Messing with widget and such often leads to crashes and KDE restarting, but I do believe this is a different issue as this issue will not always be followed by a plasma crash or instability, and happens without editing widgets, panels, etc.

Has happened rarely for a few versions, finally got tired of it to submit this report. This issue is not new to this version, but sadly can't remember when this started exactly. Also do not believe it to be GPU-driver related, either. It happened on Mesa 18, also.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.15.4
KDE Frameworks Version: 5.56.0
Qt Version: 5.12.2
Kernel Version: 5.0.4-1-ck
OS Type: 64-bit
Processors: 16 × AMD Ryzen 7 1700 Eight-Core Processor
Memory: 31.4 GiB of RAM

$glxinfo | grep OpenGL
OpenGL vendor string: X.Org                                                        
OpenGL renderer string: Radeon RX 580 Series (POLARIS10, DRM 3.27.0, 5.0.4-1-ck, LLVM 8.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.1.0-devel (git-d4e0fbc92f)
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.1.0-devel (git-d4e0fbc92f)
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.1.0-devel (git-d4e0fbc92f)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:
Comment 1 Aaron Bottegal 2019-04-04 16:12:40 UTC 
Currently, my left (main) display is shown on the right alternative display. Only been booted for about 2 hours.
Comment 2 Aaron Bottegal 2019-07-10 19:17:26 UTC 
I believe this was fixed in a update along the way as I don't have the issue anymore. No setup change at all, just software. Thanks!