Screen adjustment

[inkslinger]

I received my PBP this week. On startup I recognized some backlight bleeding.
But the main problem is that my eyes badly hurt when looking on the screen for 5 mins or longer.
I changed DPI from 96 to 120 - didn't get better

Screen resolution:
Changing screen resolution in MATE and terminal with xrandr other than 1920x1080 resulted in black screens

Gamma:
try to change with xgamma and xrandr - nothing happens

Only thing I can change is brightness via keyboard function keys.

Any ideas how to adjust screen settings on factory OS?

I have the same issue. The resolution means text is too small for me to easily read. I tried to adjust it and got a black screen.