Lenovo x280

Maxx

I bought a spare Lenovo X280. It has the screen with PWM at all other than 100%.

With windows 11, all updates, I've now used it without any eye strain for 2 days.

Lenovo L13, which is similar setup, produces terrible bloodshot eyes.

So, please acknowledge this: for some people there still are devices that are perfectly usable even with the newest drivers and windows version.

why can't manufacturers just make these, instead of fiddling with E ink and RLCD.

Maxx

Maxx The problem is that we cannot get enough people even in this forum to actually test and confirm these findings

I urge everyone to think of they would have even a remote possibility that Lenovo x280 would be OK and get one from eBay or some such.

If we would have even 10 people who would have no issues with x280 but terrible eye strain with OLED and PWM and modern temporal dithering, the we could contact Intel and Lenovo and report these findings and ask if there would be any chance they could do a remake of similar tech, or at least investigate what is missing from x280 that modern laptops have.

jordan

Maxx can you check what panel your laptop uses?

krooto

Maxx Do you have x280 with TN 1366x768 or IPS with 1920x1080 ?

IPS according notebookcheck is PWM free.

So you have x280 with TN panel and PWM ?

Sunspark

Lenovo uses multiple panels for all their models. You have an X280 with a panel that worked for you, but we don't know which panel you have. You should look it up.

Maxx

Sunspark I had another individual of this laptop and it had the same panel code, but it was totally different panel. It was brighter and did not have PWM, where as this is low brightness and does have PWM. Same code, so it does not help to check the code.

If you are buying, check if it has PWM by taking a video with high shutter speed

iannn

Maxx both panels are full hd?

With the slow-mo mode on the phone you are able to see the difference between these two?

Maxx

krooto 1080 panel with PWM at below 100%

DisplaysShouldNotBeTVs

krooto IPS according notebookcheck is PWM free.

there are multiple IPS panel suppliers and each panel manufacturer is usually not consistent in specifications for lenovo products

also notebookcheck gets PWM ratings really wrong a large amount of the time (for example two different Apple M2 Airs I tested — each with a visibly different panel — both had obvious PWM flicker on a slow motion camera when showing gray, many others have detected this too, but notebookcheck said it had "no pwm" which is not true)

krooto

I bought x280 with TN 1366x768 panel

No PWM at any brightness level

krooto

no need to use slowmo camera to detect PWM

smartphone camera show stripes on PWM

Maxx

That's not the panel I have, so I have no idea if it should work

Maxx

I think mine is LCD and it's 1080p and it does have PWM under 100