https://bugs.kde.org/show_bug.cgi?id=521227

Ed <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |edbrady@waterefficiencytech
                   |                            |.com

--- Comment #4 from Ed <[email protected]> ---
Fedora 44 KDE Plasma 6.7.0 + NVIDIA RTX 5080 multi-monitor corruption after
login

System:
- Fedora 44 KDE
- Plasma/KWin/KScreen 6.7.0-1.fc44
- NVIDIA RTX 5080
- NVIDIA driver 595.80
- Kernel tested: 7.0.12-201.fc44 and 7.0.11-200.fc44
- Three monitors: center 2560x1440, left/right 1920x1080

Problem:
After transaction 224 upgraded Plasma/KWin/KScreen from 6.6.5 to 6.7.0,
SDDM/login screen renders correctly across all three displays. After login,
Plasma corrupts the desktop rendering. On X11 the center display renders
incorrectly; on Wayland the failure changes location. Older kernel did not
resolve it.

Important log evidence:
KWin crash log references:
KWin::RenderLoop::activeWindowControlsVrrRefreshRate()

Also seeing NVIDIA/EDID related warnings.

What I tried:
- Reboot
- X11 and Wayland sessions
- Older kernel 7.0.11
- Reset KScreen/Plasma monitor config
- Re-applied xrandr layout
- Confirmed NVIDIA driver loads
- Confirmed monitor geometry is detected correctly
- Windows drives all three monitors normally

This looks like a regression in Plasma/KWin/KScreen 6.7.0 with
NVIDIA/multi-monitor/VRR handling.

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