I'm using a chromebook Pixel 2, with a 2560x1700 (3:2) display. My goal is to use a smaller 3:2 resolution.
For a while now, I've been using a few commands to reset the resolution on my Chroot of Unity 14.04 (commands below). This works fine as a temporary fix, but it's a little bothersome to reset the resolution to stock settings whenever I log in or out of the chroot.
Here are the commands I use:
cvt 1680 1120 60
xrandr --newmode "1680x1120_60.00" 157.00 1680 1792 1968 2256 1120 1123 1133 1162 -hsync +vsync
xrandr --addmode eDP1 1680x1120_60.00
I attempted converting the commands to a bash file, but when run, xrandr gave many errors.
If I could simply add a 3:2 resolution (perhaps close to 1680x1120) to xrandr permanently, that would be perfect.
EDIT: I followed this article on dnschneid's crouton wiki to get my current results, which just need to be made persistent. It boils down to the three commands I posted before.
I would suggest using the System Settings Display Settings to change the resolution. It should stay the same. Although, to be honest, I don't understand why you would want to turn down the resolution. You have a very high resolution display, and so I think that instead of turning down the resolution (why waste all those pixels!), you should just adjust the scale of all text: