How to change the screen DPI in 11.10? [duplicate]
Sorry, this is exactly what you didn't want.
You can do this using the Gnome Tweak Tool, although you'll need to do some basic math :)
So first, install the gnome-tweak-tool package, or click here install it.
Then go to the Fonts tab and change the Text scaling factor
Then a little bit of math :)
