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2411550_en-US
2411550_en-US
GTK4 Window Startup Delay (~10s) on i.MX8MP with Vivante GPU
When using the default GTK4 GL renderer:
gtk_window_present(window);takes approximately 9-10 seconds before the window becomes visible.
The evidence (see attached file) strongly suggests that the startup delay is not caused by GTK application code.
The delay appears correlated with a blocking Vivante /dev/galcore ioctl within the GL rendering path. Software rendering (GSK_RENDERER=cairo) avoids the issue.
We are looking for guidance on known issues, debugging methods, configuration changes, or fixes for GTK4/OpenGL startup latency on i.MX8MP with the Vivante GPU stack.
Hi @jim777
Thank you for sharing such detailed information. Could you provide a minimal, reproducible GTK4 source code example? I need to conduct further testing in the NXP BSP.
Best Regards,
Zhiming
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