Feeling too lazy to look up your computer’s display specs? Type in the following to get your resolution:
xrandr --current | head -2
You’ll get something like this, but be mindful that the output can be ludicrous sometimes:
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
eDP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 310mm x 170mm