Today, I stumbled on a solution: xrandr's --scale option. This allows you to scale that screen to almost any resolution you want.
- xrandr -q
- xrandr --output DP-2 --scale .5x.5
One thing to note. Sometimes trying to go from one scaled resolution to another will fail with an error. Don't panic: just change the scale back to 1x1, and the next scale you choose will work. The scaling numbers don't have to be simple: I managed to get ~1650x1050 by putting the scale value as .5729x.5729.
Here's a link to the script: https://gist.github.com/4552263/
This script takes one parameter: the width in pixels of your screen.
sh ./Res.sh 1680
The result is a 1680x1050 scaled screen.
EDIT: I found a way to fix the trackpad settings.
I followed this advice here: uselessuseofcat.com/?p=74ls,
but it didn't quite help with the trackpad's tap-click.
I then found this package: gpointing-device-settings
sudo apt-get install gpointing-device-settings
This installs a utility that is launched by running
in the terminal.
This is a graphical configuration for your trackpad, so you should be able to customize your mouse however you want.