JTL
So I can't say anything definitively yet, but I do have significant evidence that what I am seeing is in the video signal and not due to the panel. I was watching this utube video https://duckduckgo.com/?q=dreamweaver&t=hf&iar=videos&iax=videos&ia=videos&iai=ORV1HOSgv2Q and noticed that the "dithering" I see on the Dasung panel was also in the video. to describe it, imagine textures to be represented by a temporally static combination of wavy filaments and dots about 1-3 pixels in width that move with relative intensity to their proximity to the mouse cursor. Well, I noticed the "Dithering" --(maybe not the correct term here) in the white parts of the video following the mouse in the video not my mouse. I plugged in an old LCD and moved the video to that monitor, and could not see any dithering. Moved it back to the Dasung and the dithering was there. So there is strong evidence that there is some source of dithering on Max,Linux, and windows 8-10 that is present in the video signal regardless of hardware. My previous known good configuration was ATI graphics connected to 4k flicker-free 8bit benq with each head running through an HD PVR Rocket set to 23 and 25 hz refresh. on windows 8.1 deleting the monitor-device in device manager then setting the generic monitor device to disabled. then keeping some portion of webkit enabled active windows on each monitor so they would get conflicting clock edges. I cant say if my condition has progressed or if some update has rendered this no longer usable, but it seems like the no-light Dasungs are my only option now. I can say that the "dithring" I see on those is not eliminated by the DP_DisableDither reg entry with ati or by Ditherig.exe on Intel. It is present in differing levels on Linux and windows, but there in both. it comes in 2 varieties, always moving, and only moving with the mouse. The PVR rocket seems to act as a partial low-pass filter and reduces but does not eliminate the degree of "dithering". This is also true of virtual machines. At this point my observations have been casual, I will do a rigorous and scientific analysis when I have a better Idea of what I am looking for. I am not even sure if the “Dithering” I see is what makes me sick. After 10 years, the symptoms have gotten more severe and the brunt happens the next day so I am a little gun shy of using myself as a lab rat.

I know I owe a video, but I am such a PITA anti-smartphone guy that I have to eat crow in order to ask a friend to use theirs.

      ShivaWind I should add that my previous known good configuration also requried dissabling 2 windows services. Fontcache and Netbios over TCP/IP the name of the second one may not be exact?

        ShivaWind I assume it's some super strong stroby blue LED.

        I can make one myself with an Arduino. Don't need their overpriced garbage.

          4 days later

          I would be more interested in seeing one created from a cell phone. You could put the app on google play and let teenagers dare each other to stare at the screen. It could be like the next pokemon go! all we need is a catchy name. puke-eh-man go! then again, does the world need weaponized smart phones?

            JTL he deserved it (and more). I was there when it happened and it still cracks me up

                degen He's strange man, that's for sure.

                  12 days later

                  AgentX20 Is there any way of confirming which phones have this and which don't? For example Galaxy S5 does not bother me while Galaxy S7 and S8 do.

                      ryans I'm not aware of any foolproof way to detect which devices will be troublesome. This is due to different people being sensitive to different aspects of the displays coupled with vendors using different supplies on the same device, and with there not being any real clarity on what the problems really are.

                      That leaves trial and error...

                          AgentX20 Anyone had some or all of their wisdom teeth removed? Im checking possible TMJ connection with this. I think we must have something in common. Of course it can be genetic brain issue, but maybe not.

                              I have had my wisdom teeth removed, for sure. Martin, things I've considered:

                              • TMJ (I have mild TMJ and mild tinnitus, of the inflammatory variety... the muscles get swollen and it makes my ears ring and jaw ache, I sleep with a nightguard)
                              • Blue eye pigment (I am from scandinavian stock, but none of my siblings or parents have this issue)

                              All I know is that nothing definitively helps. I've had no eye problems on bad TMJ days, and vice versa. One thing that REALLY helps... is Lutein. I take a high-potency Lutein supplement and that is helping a LOT.

                              martin all wisdom teeth removed... At the age of 15. The light problems started 9 years later.

                              • Gurm replied to this.

                                  KM Yeah, my wisdom teeth came out at 19. Light problems started at 37. Not related, I'd say.

                                      Gurm My wisdom teeth were removed at 19, my problems started at 18, am 21 now. So the light problems were before wisdom teeth removal (still had them).

                                        Ive been to a neurologist and the diagnostic is general migraine disorder. She said I can be happy I know the trigger (LEDs, flashing or color related) as some people have it from chocolate, red wine, weather..., and that there is nothing anyone can do about it at the moment. Gonna get an MRI soon but she said they probably wont find anything to catch onto, so just to rule out some physical trouble in the brain.
                                        Ive also been told that the typical inability to focus (on the screen or somewhere else) is a followup of the migraine already happening from something else (light).
                                        Maybe we are all just migraine affected people that came here because its triggered from the same thing - LEDs and flicker.

                                        Got a magnesium prescription as a nutrition supplement.

                                          ensete LED monitors use LED backlights. LEDs are extremely precise in reacting to input current, they turn off even for 1/100000 seconds(not that this would be a problem). Problems arrise for sensitive people when they turn of for 1/10000 of a second or more repeatedly.

                                          Just as not all LED light bulbs are alike so goes for LED monitors because of their backlight driver implementation. Just because it is marketed as flicker-free you don't have that guarantee. New cheaper LED drivers use integrated circuits which is not a bad thing BUT it does make the driver more sensitive to input current, so you might be lucky and live somewhere where you have good electricity and have no problems and some might not.

                                            Harrison
                                            ensete
                                            I agree that migraines can also come from health issues BUT if you don't have a migraine and then you watch TV, play a game on a LED monitor or enter a room that is only lit by LED lighting(or CFL) AND you get a migraine or dizzy then it is not your gluten intolerance that is causing this. What next? Are you guys going to convince us the earth is flat? Or maybe the zodiac has something to do with the fact that you get a headache from invisible flicker?

                                            Please lets keep this as scientific as possible. There are a LOT of scientific papers regarding light flicker and invisible light flicker which causes a series of problems for humans and animals alike.

                                            If you would like I can provide links to some of those scientific papers. Until then you should read this article(use automatic translation from Chrome, does a pretty good job):
                                            https://www.elektroboerse-smarthouse.de/elektroinstallation/beleuchtung/artikel/138700/

                                            For more you can go:
                                            https://www.derlichtpeter.de/en/

                                            Invisible flicker that is harmfull cannot be spoted even with a DSLR with 1/4000. Here is a toy that might help you spot it:
                                            https://www.fauser.biz/li/lifli.htm

                                                martin Everybody is affected by invisible flicker. People like us either have better vision or we have eyes that are more sensitive to light flicker.

                                                All eyes get micro muscle contractions from light flicker, we are lucky that we also get headaches and we realize that something is wrong. You fix the invisible light flicker you loose the headache and you keep your 20/20 vision.

                                                Other people who don't get headaches don't care about this. They just loose their perfect 20/20 vision in a few years and think they lost it because they got older and not because of the light flicker.

                                                    dev