Hello.

As you’ve surely noticed, when connecting the Raspberry to a FullHD monitor, the resolution isn’t 1920x1080, and it’s not possible to select it.

To force this resolution, go to:

sudo nano /boot/config.txt

look for all

disable_overscan=0

and change the value to 1 (from 0 to 1).

Finally, at the end of the file, comment out the following lines (comment with #):

overscan_left=24 overscan_right=24 overscan_top=16 overscan_bottom=16

Restart the Raspberry.

Bye!

! :) !

Source:

http://www.webtechgadgetry.com/2013/12/make-raspberry-pi-use-full-resolution-monitor/