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mmatyas avatar mmatyas commented on May 23, 2024

Hm I'm not familiar with 4K displays, I wonder if any of the env vars here https://doc.qt.io/qt-5/highdpi.html could help?

The flashing indicates that there's something constantly trying to draw at the same time as Pegasus. I'd assume it's not intentional by any underlying components; I wonder if it comes from somewhere else? Maybe from the hardware, like the overheating indicator on previous Raspberries? Or the OS? The cable signal? Does it happen with any program where you are certain it's running in 4k60Hz?

The Qt version is slightly older than what we use, perhaps this was fixed since then? I wonder if the Pi 5 is backward compatible, and capable of running the Pi 4 build?

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darksaviorx avatar darksaviorx commented on May 23, 2024

I wouldn't know how to try those env vars but I'll do a trial and error later.

The problem is exclusive to only Pegasus. I've had none of these issues with Emulationstation and the Retroarch emulators. They all run at 4k60Hz without issues and without that flashing rectangle.

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