Hello everyone, I wrote a topic about my problems with my new Legion 5. In the first days it caused severe eye strain, migraines, brain fog, blurry vision, strong nausea, neck problems and others. But everything disappeared once I upgraded the BIOS, this changed the performance mode from the quiet one to the balanced one. Plus I switched the screen manager from the integrated AMD GPU to the dedicated Nvidia rtx 3060. Changed some settings with the nvidia control panel. A miracle, I was able to use my notebook for 3 hours consecutive without any problem. For about two weeks had no problems. To make a test I tried to use the quiet mode again (without touching the other settings) and confirmed that it gives me eye strain. Installed the new BIOS upgrade, and there was a reset, everything came back like before. Brighness and contrast level, AMD managing the screen ecc. Complete reset. Did the whole job again (switched to the nvidia 3060 and set brightness and contrast ecc). Now I have eye strain again. No other symptoms like migraines or pain or brain fog, just eye strain. Especially with my right eye. So the problem could be the upgrade of the BIOS? I'm not sure, maybe before the upgrade I just had some kind of adaptation that is now over? The screen is strange, is an LG model (produced in China). It is an LCD with WLED backlight, I' don't know how it is possible. Plus is has DC DIMMING, that is similar to the PWM technique. I leave a link for someone who can maybe find something interesting for him:
https://www.panelook.com/LP156WFG-SPT2_LG%20Display_15.6_LCM_overview_50325.html
Now I don't know what to do. I can't uninstall the BIOS upgrade. There is no way to contact LG or Lenovo for a solution. I think I will change the notebook. But first I must understand what is the problem. Someone has some ideas? Some advice? Thank everyone in advice