Comment chain was too deep so I couldn't reply. Good article on PWM: https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM-is-such-a-headache.270240.0.h

Comment chain was too deep so I couldn't reply. Good article on PWM: https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM-is-such-a-headache.270240.0.html https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM... I think you need an oscilloscope and some other tools if you want to test what the PWM frequency is. The easiest way to check for PWM is to just look up reviews for laptops using the same panel (you can find the panel number using hwinfo on Windows). To just test for if your display has PWM, lower the brightness, and use the blurbusters test: https://www.testufo.com/blurtrail https://www.testufo.com/blurtrail