Pain behind IPS monitor
What I have been doing and work in progress. Hopefully saves some people $$$.
https://ledstrain.org/d/2589-products-to-try-or-avoid-pwm-flicker-and-temporal-dithering-testing
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photon78s It is very funny when there is a PWM 60Hz on the oscilloscope, although the author of the review (on Asus VivoBook 15 OLED laptop) writes that there is none.
In a review on Asus VivoBook 15 Pro OLED, the author put on glasses and was able to see PWM on OLED. An example of a screen without PWM looks like this.
Could be the regular brightness dip that OLED displays, perhaps in varying degrees, generally have and which matches the refresh rate. Perhaps it is a scan line. To be sure, we'd need to measure the display with 2 different sensors simultaneously.
This is correct, OLEDs, like CRTs are an emissive display, so there is a always a dark scan line passing down the screen as each pixel updates from one frame to another. Its an unavoidable part of OLEDs, though I guess it could be worse on some screens than others.
That's what we can see on the oscilloscope output.
I'm looking into just swapping out the panel myself of an old laptop using ifixit.com guides for known good or better panels. For instance: https://www.ifixit.com/Guide/Lenovo+ThinkPad+T480s+LCD+Panel+Replacement/144259
Hello, has anyone tested the novideo_srgb app to disable dithering?
https://github.com/ledoge/novideo_srgb
I have/had inflammatory bowel disease, around five years ago I realised through extensive food diaries that red meat/dairy was a factor. I cut out these foods, for the first year whilst my bowel disease improved dramatically, my screen induced migraines worsened. However, every year since my migraines have improved. I'm not sure if I am cured yet, but I haven't experienced any problems with screens or software in six months but I've been cautious.
When I'm sure I'm cured I'll write a big post outlining what I think the causes were, quoting scientific journal papers etc, but I don't know how much help it will be to regular forum users. This cause could be unique to me.
