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Blank screen during boot in between uboot splash screena nd kernel psplash

adnan_pasha
Senior

Hi,

I’m working on a custom board based on the STM32MP157DAC. U-Boot splash is enabled, psplash is enabled in the kernel, and we have custom display drivers in both U-Boot and Linux. The display initializes in U-Boot and shows the splash, but ~4–5 seconds after the kernel starts the screen goes blank. About 10 seconds later, when the kernel’s display driver probes and re-initializes the panel, psplash appears.

We want to eliminate that blank interval—i.e., keep the U-Boot splash visible until the kernel takes over and psplash is shown. Why is this happening, and what can we do to maintain continuous display across the handoff?

Note:- In discovery kit we dont see any blank screen with default image.

Regards,
Adnan

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