Boot from SD and edit screen res on native OS?

[dhosh]

you don't want to change the resolution. keep this at FHD. you can use scaling if supported by the window manager.

Very good... Thanks for the tip!  Is my process, listed above, correct to get the resolution set back tondrlefault?  As, right now .. booting from the default OS, I just have a black screen. :-( I would need to know what file to make the change in, however. I can probably being around until I find it. I've done a reasonable amount of work on Linux, but pretty much only on working systems. :-)