I went from a 2600x to a 5600 (yes, MoBo is compatible after BIOS update) and now for some reasons I get 1FPS in games and monitor is not really detected (resolution is fine, but I can't change refresh rate and in "color" settings it's shown as "None-1 Monitor").

I tried:

• monitor factory reset;
• updating GPU drivers (was already running latest);
• removing and purging GPU drivers (sudo apt remove ~nnvidia and sudo apt-get purge nvidia*) and reinstalling (sudo apt install pop-desktop system76-driver-nvidia);
• resetting RAM speed to factory (2400Mhz).

Still nothing.

As you can guess from the commands, I'm running PoP!_OS and a nVidia GPU.

What else can I try?

Thanks in advance!

Issue found: I disabled secure boot from BIOS and now I can change resolution and refresh rate. Since I updated BIOS just before installing the new CPU it went under the radar