Bug 505963

Summary: KDE Plasma 6.4.0 - External monitors - crashed wine's apps
Product: [Plasma] plasmashell Reporter: sement <gosu38>
Component: "Manage Desktop and Panels" windowAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: crash    
Priority: NOR    
Version First Reported In: 6.4.0   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description sement 2025-06-22 10:50:12 UTC
After upgrading to KDE Plasma 6.4, all applications running in the Wine environment, do not work. Some of them do not start, some of them start with a black window view, or start in such a way that you can't click anything in the application.
The problem also occurs in some flatpack applications, such as Microsoft Edge.

I only experience the problem when I have external monitors connected (usbc, MST). 



STEPS TO REPRODUCE
1. Update KDE Plasma from 6.3 to 6.4
2. Just run wine's apps


OBSERVED RESULT

I only experience the problem when I have external monitors connected (usbc, MST). When the laptop is disconnected from the external monitors, the problem does not occur.

EXPECTED RESULT

To make them work as in KDE Plasma 6.4

SOFTWARE/OS VERSIONS

OS: Fedora Linux 41 (KDE Plasma) x86_64
Host: 21HD0053PB (ThinkPad T14 Gen 4)
Kernel: Linux 6.14.11-200.fc41.x86_64


Display (PL2797Q): 2560x1440 @ 100 Hz in 27" [External]
Display (PL2797Q): 2560x1440 @ 100 Hz in 27" [External] *
DE: KDE Plasma 6.4.0
WM: KWin (Wayland)
WM Theme: Monochrome
Theme: Breeze (Monochrome) [Qt], Breeze [GTK3]
Icons: breeze-dark [Qt], breeze-dark [GTK3/4]
Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK3/4]
Cursor: breeze (24px)
Terminal: yakuake 25.4.2
Terminal Font: Fira Mono (9pt)
                                          CPU: 13th Gen Intel(R) Core(TM) i7-1355U (12) @ 5.00 GHz
                                          GPU: Intel UHD Graphics @ 1.30 GHz [Integrated]
                                          Memory: 4.60 GiB / 15.28 GiB (30%)
                                          Swap: 0 B / 24.00 GiB (0%)
                                          Disk (/): 316.02 GiB / 451.14 GiB (70%) - ext4
                                          Local IP (eth0): 192.168.0.20/24
                                          Battery (5B10W51867): 78% [AC Connected]
                                          Locale: pl_PL.UTF-8
Comment 1 sement 2025-06-22 21:41:02 UTC
Problem solved. I had the system variable set to: 
POWERDEVIL_NO_DDCUTIL=1