Add custom 16/9 resolution ubuntu 14.04/16.04

gistfile1.txt

## generate modeline

```
cvt 1600 900 60
```

outputs:

```
Modeline "1600x900_60.00"  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync
```

## apply modeline
sudo xrandr --newmode "1600x900_60.00"  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync

## add resolution
sudo xrandr --addmode eDP1 1600x900_60.00

Instead of eDP1 you may want to put something else.
To get list of connected display IDs:

```
xrandr | grep -e " connected [^(]" | sed -e "s/\([A-Z0-9]\+\) connected.*/\1/"
```

## set a previously specified resolution

xrandr -s 1600x900_60.00

Thanks! It worked on my Ubuntu 16.04.2 LTS 64-bit