https://bugs.kde.org/show_bug.cgi?id=503162
Bug ID: 503162
Summary: Kdenlive crashes on startup when KDE desktop uses
Vulkan rendering (Qt 6.9, NVIDIA)
Classification: Applications
Product: kdenlive
Version: unspecified
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: User Interface & Miscellaneous
Assignee: j...@kdenlive.org
Reporter: lolkek2...@gmail.com
Target Milestone: ---
Created attachment 180520
--> https://bugs.kde.org/attachment.cgi?id=180520&action=edit
Backtrace
Kdenlive fails to start when Vulkan is used as the rendering backend in KDE
Plasma 6 (Wayland). The application crashes immediately after launch with a
segmentation fault.
When the rendering mode is set to "Automatic" or QT_QUICK_BACKEND=software,
Kdenlive starts correctly.
Tested on Arch Linux with NVIDIA proprietary driver and Qt 6.9.
✅ Works:
QT_QUICK_BACKEND=software
KDE rendering mode: Automatic
❌ Crashes:
KDE rendering mode: Vulkan (without additional environment variables)
Info:
GPU: NVIDIA GeForce RTX 3070 Ti
Driver: 570.144-1 (proprietary)
Qt version: 6.9.0
Kdenlive: 25.04.0-1 (from Arch repo)
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