Screen Flickering. Is this normal?

[pveentjer]

It is a strange issue.

A few weeks back after doing an upgrade (don't know if it is caused by the firmware upgrade), I saw a lot of flicker. It gets worse when brightness is increased. I was even considering to buy a 50g since it doesn't have a back-light (still considering to buy one.. but that is because I'm a nerd). I have my calculator for almost 1.5 years and before I never found it an issue.

But after a few hours of serious irritation, somehow it passed. It could be the LED lights I was sitting under and I also reduced brightness. I'm using my calculator daily and I'm not bothered by it any longer. The issue also seems to be worse with the dark theme.

I do not have the newest version (with the improved CPU), but the version before that.

ps:
I'm very sensitive to flickering lights. Even though my monitor doesn't make use of PWM, I can still see the flicker on my screen. The more I focus on it, the more it irritates me. I sit at least 8h a day behind a screen since I'm a software engineer.