For the last five years I've used an 11" MacBook Air with a 27" Thunderbolt display for work. My eyesight is very bad and so for all that time I've ran the display in 1280x720 HiDPI mode, it's been a big help in allowing me to keep working as my eyes deteriorate. Last week I was happy to get a 13" Retina MacBook Pro to replace the Air, it's much more powerful and nicer in every way. Unfortunately, whatever I do I can't get HiDPI mode to work on the Thunderbolt display. I can run it in "normal" 1280x720, but the text is very pixellated and when I zoom in using Control-Scroll (which I need to do many times a day) the result is often so blocky I cannot read the characters. I fear this is a result of the MacBook Pro having a native HiDPI screen, and so the trick that allowed me to run HiDPI resolutions on the Thunderbolt display may be impossible. I've searched on Google and these forums for a solution but have not been able to find one. TLDR - Can anyone help me run 1280x720 HiDPI on my Thunderbolt Display using a 2015 13" Retina MacBook Pro? Does anyone know if this is definitely impossible?