Hacker News

Favorites Setup
Comment by dbspin | original | The MacBook Pro's OLED PWM Problem: When a 'Better' Display Becomes Worse to Use
[−]dbspin · 2026-11-15 Sun 14:10 UTC · link
I'd be fascinated to see how common this really is. Is it something that affects .0001% of users, more, less? At Apple scale an issue like that could hit millions of people. Given the newness and expense of the product one would assume not that many OLED Macbook Pros have shipped. So it's surprising that this issue didn't come up in testing if we're talking about more than a handful of people.
[−]Y-bar · 2026-11-15 Sun 14:21 UTC · link
Given that we discovered in the nineties that CFL tubes were unhealthy for a significant portion of the population at these refresh rates and changed to over 30kHz I would assume the same holds true here. In other words: more than we would have thought.
[−]Forgeties79 · 2026-11-15 Sun 14:24 UTC · link
.0001% is not nearly millions. They don’t sell [hundreds of] billions of units
[−]tarsierscripter · 2026-11-15 Sun 14:30 UTC · link
Even if they sold 100 billion units, .0001% would only be 100 thousand.
[−]Forgeties79 · 2026-11-15 Sun 15:11 UTC · link
I decided to approximate because I didn’t feel like doing the rest of the math lol but yes even more ridiculous than I said.

I’m all about hyperbole, but that’s a bit ridiculous.

[−]dbspin · 2026-11-15 Sun 15:57 UTC · link
Fair, I suppose I was thinking but not articulating about such an issue affecting all apple devices (ie: including mobile).
[−]hartator · 2026-11-15 Sun 14:25 UTC · link
I would say most people are actually sensitive, and report eye strain faster when using a specifc type of display, but don’t make the connection.
[−]incrudible · 2026-11-15 Sun 14:32 UTC · link
PWM sensitivity has been an issue on the iPhone for a long time, but the prevailing wisdom is that it affects only a small percentage of users, and then only at certain lower brightness levels. Consider it like a food allergy, we don’t rearchitect the entire food supply for everyone around the sensitivities of a few.

That said, I have my doubts about prevailing wisdom being true here.

[−]microtonal · 2026-11-15 Sun 15:00 UTC · link
It's hard to put a number on it (e.g. do people with eyesight problems or headaches actually know it's their display?) and it may also be influenced by other factors. I have used phones with 240Hz PWM dimming for years and haven't had an issue. However, I quickly get eyestrain when looking at e.g. a Samsung S26 Ultra. It's probably the combination of 240Hz PWM, FRC for emulating 10-bit on an 8-bit panel, and maybe the two types of pixels (narrow and wide, for the privacy display) that makes it painful for me.

I can also imagine that lower frequency PWM dimming can be more problematic on a display that covers a larger portion of your sight. Many people also probably use their laptop/computer screen for a longer time without looking away (aside from phone addicts).

[−]brnt · 2026-11-15 Sun 15:10 UTC · link
A small aside: this is why I truly hate when people argue 'oh well, his only happens in 1% of cases, it's not worth supporting/solving'. With sufficient scale, and even without sufficient scale, it's thousands or even millions of people!
[−]dbspin · 2026-11-15 Sun 15:58 UTC · link
Agreed, that wasn't my point. I wasn't suggesting it's fine if it only affects a small number of people. More confused as to how it could slip through testing if it affects a substantial number - given how few units have likely shipped.
[−]spamizbad · 2026-11-15 Sun 15:20 UTC · link
It's likely to impact far more than .0001% of users. I'd put it closer to 12% - roughly the same percentage of the population that suffers from migraines. Granted, the degree of which it impacts the person will vary, but if these displays earn the reputation of triggering them, migraine sufferers will steer clear.
[−]vitaflo · 2026-11-15 Sun 15:31 UTC · link
This has been an issue for all Apple OLED displays since they came out. I bought the iPhone Mini when it came out but couldn't stand it because of the PWM on the display. I had to get an SE instead which used an LCD display.

I'm one of the ones who is very sensitive to this. I get occular migraines often. It has become fairly difficult to find displays that don't have these problems as everyone moves to PWM dimming on everything. Even lightbulbs are a difficult purchase for the same reason (at least Ikea makes some that have zero flicker and are cheap).

[−]Danox · 2026-11-15 Sun 17:11 UTC · link
Tough luck. The gamerboy mentality rules the computer world. Quantity over quality.
[−]techpression · 2026-11-15 Sun 15:50 UTC · link
Apple is pretty bad at testing, they released the first Retina MBP with ghosting that remained for a minute or even more (I had one). I use Apple products a lot, but one thing I learnt many many years ago, is never buy the first of anything new they do. Most of the time it will be fine, but when it’s not it’s just bad.
[−]Danox · 2026-11-15 Sun 17:12 UTC · link
In comparison to who? certainly can’t be talking about the rest of the computer industry because they’re still standardized on 4K monitors…
[−]marcellus23 · 2026-11-15 Sun 17:50 UTC · link
> they released the first Retina MBP with ghosting that remained for a minute or even more (I had one).

I also had one, for probably 6 years or so, and never experienced this.