Strange horizontal ghost effect mostly on light images

[nico23]

I'm experiencing a strange horizontal ghost/stripe effect mostly on light images (it's very visibile in text)

What could it be?

I'm using the STM32H7S78 microcontroller

[GaetanGodart]

Hello @nico23 ,

Have you had the opportunity to try another display?
If you don't have one, you can share the GUI with me and I can try on some of the discovery kits.

Regards,

[nico23]

Hi @GaetanGodart ,

we are still investigating. I'll post an update here as soon as I know more

[nico23 · Accepted solution]

Hi @GaetanGodart ,

It turned out to be the initialization of the oscillator in the SystemClock_Config.

Tuning RCC_OscInitStruct.PLL3.PLLR from 12 to 24 fixed the issue. Additionally, the touchscreen began to respond more effectively to touches.

[GaetanGodart]

Hello @nico23 ,

I am glad you found a solution. :)
Don't hesitate to create a new thread if you face another issue.

Regards,