A few items to note.
1) screen res. build.prop is where you go. I set mine to 1280x750 (that's 1.25x native). It displays well, lets you grab pics at that res 96dpi.
2) build.prop setting will carry into "dumpsys |grep Display" , but , actual physical screen seems to be captured by a function "fts_dt_coords", no matter the prop setting, this function gets "x(0 1024) y(0 600)". This appears to be the physcial screen layout.
Now, onto another question. What is the scope doing here (pics).
I have some noise from open probe, then I go to Stop mode, then I off/on CH1 keypad. Why the changes in the display? Is the last one just a view of last captured screen in buffer? Pics are in the 1280x750 size.