About display geometry (the visible range of the screen)
Can't You say me how I can correct display geometry on my i5 2010 iMac? ... Thank You ...
Go under the Apple in the upper left hand corner to System Preferences: Hardware: Displays and select your resolution.
No it's not resolution it's geometry ...
Screen was rotated on 1-2 degrees CW ... It's haven't possibility to configure geometry of screen on iMac (as I know now) ... So I return this iMac, and waiting new ... So this trouble is not relevant now ... Thanks You all for trying to help ..