Display Enlightment by NCX

When I try that PWM test page, I get a "sync failure" error at the bottom, which is telling me to move all my apps to my primary monitor.

I don't know what that means, and if it means the test won't work properly.

I don't notice any difference running that test at various brightness levels on my 22xw, and the results look the same as on my 25er. I'm assuming the 22xw is flicker free, but with that sync failure error I can't know for sure.

Of my two HPs, I definitely prefer the low haze 25er. I bought this 25er when the 22xw seemed to be straining my eyes and someone suggested the low haze feature might help.