I have a very similar problem. I have a PC with a monitor which I can use all day without issues. One day, I lend the monitor to a coworker. I told him he could keep it, and I bought a new one (of the same model). When it arrived I instantly felt dizzy by watching at the screen, as if I couldn't focus while I read. I switched monitor with my coworker and voila! I could watch it again all day without symptoms.

Is worth noting that even they were the same model, the first monitor was bought in 2022 and the second one in 2024. So maybe something changed in the panel. But this a prove that it's not only a software problem, it's also a hardware problem.

    RobC on Macbook air m2 Sonoma 13 this command did not return anything.

    • RobC replied to this.

        Donux Try again with the right quotation marks. They were modified when I pasted the command:

        ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6

          Donux

          A better option:

          ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///"

          If you put every answer with the "00ff…>" format into an edid-decoder like this one:

          https://hverkuil.home.xs4all.nl/edid-decode/edid-decode.html

          you could get much more details of your panels, like the vendor and date in which they were manufactured among others.

            dev