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AIO-3568J Frame buffer and HDMI

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Posted at 7/19/2022 16:32:12     
Hello, I launched the kernel from the sdk and busy box on this board, the frame buffer is created when the HDMI is connected, after which the backlight turns on. The problem is that writing random data to frame buffer (fb0) is not displayed on the monitor. Kernel config is firefly_linux_defconfig and device tree is rk3568-firefly-aioj.dtbI attach dmesg with drm debugging.
https://drive.google.com/file/d/ ... 4/view?usp=drivesdk

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Posted at 7/22/2022 09:17:04     
The display is managed by the windows system(X11/Wayland), you can try to close it or use /dev/dri/card0.
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Posted at 7/30/2022 22:55:17     
I need to use the Frame buffer that is being created in /dev/fb0, is there any way I can do this?
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