https://bugs.kde.org/show_bug.cgi?id=504635
Bug ID: 504635
Summary: Applications don't show with 'Show only tasks: From
current screen' after scaling change
Classification: Plasma
Product: plasmashell
Version First 6.3.5
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager widgets
Assignee: plasma-b...@kde.org
Reporter: madness...@proton.me
CC: qydwhotm...@gmail.com
Target Milestone: 1.0
SUMMARY
After changing the scaling on the primary monitor, sometimes it stops showing
the applications that are on that screen in the task manager. I cannot
reproduce it consistently.
STEPS TO REPRODUCE
1. On a dual monitor setup, enable 'Show only tasks: From current screen' on
both taskbars.
2. Launch a couple of applications on the primary monitor.
3. Change scaling (and position) through the terminal with `kscreen-doctor
output.DP-1.scale.1,00` and `kscreen-doctor output.DP-1.position.1080,300`.
OBSERVED RESULT
The applications on the primary monitor stop showing in the task manager.
EXPECTED RESULT
Show the applications that are on that screen in the task manager.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Linux 42
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
- I do this very often otherwise games will have the wrong resolution. The
primary monitor must be set to 100% scaling and use `Legacy applications (X11):
Scaled by the system' prior to launching any game.
- This bug goes away if I change the Icons-and-Text Task Manager to Icons-Only
task manager (it stays fixed even after changing it back to Icons-and-Text Task
Manager).
- Changing the scaling back to the prior value makes the applications show in
the task manager again.
output of `kscreen-doctor -o`:
Output: 1 DP-1
enabled
connected
priority 1
DisplayPort
Modes: 1:2560x1440@144! 2:2560x1440@120* 3:2560x1440@100
4:2560x1440@60 5:1920x1200@144 6:1920x1080@75 7:1920x1080@60 8:1920x1080@60
9:1920x1080@60 10:1920x1080@50 11:1600x1200@144 12:1680x1050@60
13:1600x900@60 14:1280x1024@75 15:1280x1024@60 16:1440x900@144
17:1280x800@60 18:1152x864@60 19:1280x720@60 20:1280x720@60 21:1280x720@50
22:1024x768@75 23:1024x768@60 24:800x600@75 25:800x600@60 26:720x480@60
27:720x480@60 28:640x480@75 29:640x480@60 30:640x480@60 31:1600x1200@60
32:1280x1024@60 33:1024x768@60 34:1920x1200@60 35:2560x1440@60
36:1920x1080@60 37:1600x900@60 38:1368x768@60 39:1280x720@60
Geometry: 1080,440 2048x1152
Scale: 1.25
Rotation: 1
Overscan: 0
Vrr: Never
RgbRange: unknown
HDR: incapable
Wide Color Gamut: incapable
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 50% and dimming to 100%
Output: 2 DP-2
enabled
connected
priority 2
DisplayPort
Modes: 40:3840x2160@60*! 41:3840x2160@30 42:2560x1440@60
43:1920x1200@60 44:1920x1080@60 45:1920x1080@60 46:1600x1200@60
47:1680x1050@60 48:1600x900@60 49:1280x1024@60 50:1440x900@60
51:1280x800@60 52:1152x864@60 53:1280x720@60 54:1280x720@60 55:1024x768@60
56:800x600@60 57:720x480@60 58:720x480@60 59:640x480@60 60:640x480@60
61:1600x1200@60 62:1280x1024@60 63:1024x768@60 64:2560x1600@60
65:1920x1200@60 66:3200x1800@60 67:2880x1620@60 68:2560x1440@60
69:1920x1080@60 70:1600x900@60 71:1368x768@60 72:1280x720@60
Geometry: 0,0 1080x1920
Scale: 2
Rotation: 2
Overscan: 0
Vrr: incapable
RgbRange: unknown
HDR: incapable
Wide Color Gamut: incapable
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 50% and dimming to 100%
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