Comment Re:Change the DPI setting (Score 3, Insightful) 234
Your comment shows a lack of understanding as to what DPI is supposed to be used for since DPI shouldn't control scaling.
DPI stands for dots per inch, and you should configure that setting to match the actual number of dots per inch of your display. Then the SW environment should support some sort of sliding scale to let you change the size of any UI elements.
Sadly most desktop platforms don't do this correctly and bind the DPI to the size of UI elements. I will admit that resolution independence isn't easy, Microsoft didn't really start down that path until Windows 7, and Apple didn't start to get close until Mountain Lion.
Having used a retina display Mac it irritates me that they don't just have a slider to set UI scale, but instead you can select from several pre-set resolutions. I suspect this is because many applications still try to plot stuff pixel by pixel and so can't scale arbitrarily. It's not easy for most SW to be truly resolution independent and it seems most developers seem to skip handling that sanely on all platforms.