Add more resolution display
- Find out the name of your video device
sudo xrandr -q

Dell 2016H
cvt 1600 900 60
sudo xrandr --newmode "1600x900_60.00"  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync
sudo xrandr --addmode eDP-1 1600x900_60.00

Dell S2340L
cvt 1920 1080 60
sudo xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
sudo xrandr --addmode VGA1 1920x1080_60.00