I did see this happening with AMD too. AMD drivers had a bug around 2020 that newer AMD Thinkpads couldn't drive 4K displays. It was one of the reasons I stoppe

I did see this happening with AMD too. AMD drivers had a bug around 2020 that newer AMD Thinkpads couldn't drive 4K displays. It was one of the reasons I stopped using Linux after buying a new Thinkpad T14 Gen 1. Half of the hardware outright didn't work. It took a good 2 years for them to fix it.