Radeon 5500 XT problem

[laurent]

Hello,
I'm having an issue with my Radeon 5500 XT OC 8GB graphics card.
When the computer is idle, after about 8 minutes, the graphics card temperature gradually rises—and the fans ramp up their speed accordingly—but as soon as I touch the mouse or keyboard, everything returns to normal. I reinstalled the graphics card's VBIOS, but nothing changed.
Tahoe 26.7, OpenCore 1.0.7, AMD Ryzen 5 3600 msi b450 tomahawk
I can't figure out if the graphics card is failing or if there's a problem with my configuration.

 

[Edhawk]

It is unlikely to be an issue with your setup, but saying that you are using USBMapDummy.kext, when you should be using USBMap.kext. USBMapDummy.kext is normally only used while undertaking the USB port discovery, not as the end product of your custom USB configuration.

When the system is idle which background processes are running?

Test: Have Activity Monitor open, leave the system to idle and see which if any processes are running to make the dGPU fan and temperature ramp up.

Have you thought about dismantling the dGPU and replacing the thermal paste and pads used to cool the card?