Fix startup crash on Linux Wayland by falling back to XWayland (xcb)#39
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hongquanli wants to merge 1 commit into
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Fix startup crash on Linux Wayland by falling back to XWayland (xcb)#39hongquanli wants to merge 1 commit into
hongquanli wants to merge 1 commit into
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On native Wayland sessions, PyQt5 + vispy (OpenGL) fails to create an EGL surface, so the viewer crashes immediately on launch: The Wayland connection experienced a fatal error: Invalid argument Could not create EGL surface (EGL error 0x3000) QOpenGLWidget: Failed to make context current Default QT_QPA_PLATFORM to "xcb" (XWayland) when running on Linux under Wayland, unless the user has already set a Qt platform. XWayland renders reliably and this leaves X11 sessions and explicit overrides untouched. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Problem
On a native Wayland session (Ubuntu,
WAYLAND_DISPLAYset),ndviewer-lightcrashes immediately on launch. The dataset loads fine, but PyQt5 + vispy (OpenGL) cannot create an EGL surface:Fix
In
main(), before constructingQApplication, defaultQT_QPA_PLATFORMtoxcb(XWayland) when:WAYLAND_DISPLAYis set), andQT_QPA_PLATFORMunset).XWayland renders reliably for this vispy/PyQt5 stack. X11 sessions and explicit user overrides are left untouched.
Testing
On the affected Wayland machine:
(t=1, fov=83, z=1, c=5, 4168×4168)).🤖 Generated with Claude Code